6L LB7 Duramax Specifications And Information. 6l Duramax LB7/LLY Amazon 2 $376 USD XDP X-TRA Cool Direct-Fit Replacement Radiator XD295 Xtreme Deisel 1 $10 USD Heavy-Duty Synthetic Diesel Oil 15W-40 Amsoil. Best Method for Coolant Flush/Fill. 46L) Engine Coolant: 50/50 Dex-Cool Engine Coolant,. A set of 30-percent over injectors is the perfect upgrade for the LLY owner that doesn’t want to take a chance on bending a connecting rod—or that isn’t quite ready to build an engine. We give you service schedules for normal and severe use, fluid capacities, and a complete list of recommended filters, engine oils, and fluids to use. 6L LML Duramax Specifications and Information. While oil capacity is one thing to consider when dealing with your engine oil, theres much more to think about, like other Duramax fluid capacities, oil factors and unique performance needs. 6 Fluid Capacity & Torq Specs LB7/LLY/LBZ/LMM. 6L LLY Duramax Buyers Guide. 5 Quarts: Fuel: Diesel: Fuel Tank Size: 26. Maybe I didnt need to rev it. 5-2005 GM 2500HD/3500HD running cool with the high-quality Cooling System Components available at XDP. 8L LWN Duramax Specs, Tow Ratings, and Fuel Economy. The GM 6. From what I understand the LLY equipped trucks had the smallest radiators out of all the Duramax pickups. 3,192 Posts. - 2 Pack Amazon 1 $4 USD Prestone AF-KIT Flush N Fill Kit Amazon 1 $120 USD. Theres nothing that can be done about it short of adding a second cooling system and even then it just takes longer to over heat. Which is one of the reasons why the LLYs tend to run hotter. 6L Duramax variants. 4 quarts or 24 Liters: Fuel: B20 Biodiesel Blend or Ultra Low Sulfur Diesel: Fuel Tank Size: 36 Gallons Standard: Max Engine Speed: 3450: Max Braking Speed: 11 Common 6. I would recommend this (Very High Quality) setup for all LLY owners who tow heavy trailers or just want the added cooling capacity. 7 quarts must be concentrated DEXCOOL. Shop Cooling System for the GM Duramax 6. The LLY Duramax was sold from 2004-2006 and tow capacity varies between model years. With having the coolant capacity at hand ,I dont recall and Im to lazy to look it up,drain off half of the capacity approx and refill with your choice of antifreeze. The 4-inch diameter, downpipe-back, aluminized exhaust. 7L Power Stroke—an engine that also uses the CP4. 00 Lopers (Now included with the Ron Davis Radiator) Assorted hose clamps, nuts, bolts and washers $5. The LBZ engine tuning resulted in a significant increase in horsepower and torque, with the power levels getting a bump to 360 hp and 650 lb-ft of torque, up from 310 hp and 605 lb-ft of torque in the LLY. What the total coolant capacity on a duramax? Sent from AutoGuide. At 1,155 grams apiece, only the rods used in the LML (11-16) were lighter. 6L LLY Duramax, Transmission Cooling for 2001-2004 6. The Duramax Diesel pickup trucks utilize a re-surge or dual-sided surge coolant expansion tank. Producing 235-300 horsepower and 500-520 lb/ft of torque, the LB7 Duramax was a beast. A set of 30-percent over injectors is the perfect upgrade for the LLY owner that doesn’t want to take a chance on bending a connecting rod—or that isn’t quite ready to build an engine. If you are concerned with oil temps or they are getting hotter then you will benefit from this. the two coolents can be mixxed when they first came out with dexcool you were not sopose to mix. Banks 6 Gun tuner and the PPE fuel rail plug. The end result is having an extremely efficient and high-flowing turbocharger. · #3 · Sep 4, 2017 I guessed wrong adding coolant enough times that I now either buy 50/50 or blend it in jugs before hand. 6L Duramax LB7/LLY In-Stock XDP Billet Coolant Block-Off Plate XD344 $64. 35 Gallons: NOTE: All capacities are approximate. Chrysler’s Duramax is, without a doubt, one of the finest truck/SUV engines out there. 5-2005 the Duramax LLY was rated at 310 hp and 520 lb-ft of torque, which was only a 10hp increase over the 2004 LB7, but the power levels were now produced at a lower rpm, which aided in towing and hauling heavy loads. 40 Share 27K views 4 years ago This is the Easiest way I found to drain the coolant on My 2006 Duramax LBZ Make sure you have a bigger container maybe 12 quarts hold. 6L Duramax Diesel LLY: Fluids: Capacity (Quarts) Suggested Fluid(s) Engine,. Best Features: – Three-row design for maximum efficiency. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright. Leaving the radiator cap off raise the RPMs allowing it to burp off any air pockets. Fits 2001-2007 LB7 LLY LBZ 6. Without a trailer, before any coolers, a run to the ranch in Texas heat (378 miles I-10) normal transmission temps were around 200*~210*. Upgraded radiator for LLY?. Duramax coolant leak above starter heres the fix. When the LLY Duramax replaced the LB7, it offered several improvements. LML Duramax Specifications and Information>6. Where youre describing the leak, like mentioned, the small hose feeding the turbo, down under all the harnesses/hoses near the valve cover. com 1 $23 USD Diesel Water Wetter - 15 Oz. Budget Diesel Mods: LLY Duramax. 6L Duramax & 2011-2019 LML L5P 6. 00 a gallon and the posted Dex-Cool below which does not state 50/50 mix at about $14. If interested in this setup, I can assist in the install. (always seem to have an empty jug or pail around that can be used for blending) The OM says that in a pickup, the LML system holds 27L or 28. 6L Duramax & 2011-2019 LML L5P 6. During normal daily driving the tstats are constantly opening and closing, system pressure going up/down, regulated to max 16psi at the radiator outlet to the water pump. The total capacity of the cooling system is. Flush Cooling System: 150,000 miles: 240,000 km: Replace Automatic Transmission Fluid: 25,000 miles: 11 Common 6. The LLY Duramax was sold from 2004-2006 and tow capacity varies between model years. According to the owners manual, the coolant capacity is 25. SKU: BD1030606-38 Categories: Transmission Cooling for 2004. 6L Duramax LB7/LLY/LBZ/LMM/LML/L5P In-Stock XDP X-TRA Cool Direct-Fit Radiator Clutch Fan. The LML Duramax shocked its rivals when it was revealed, offering 397 horsepower and 765 lb-ft of torque while simultaneously lowering emissions and improving fuel economy. Choosing the best oil for the LB7, LLY, LBZ, LMM, LML or LP5 Duramax is a matter of understanding all your necessary oil characteristics and finding a. Conventional tow capacity across all models is 12,000 lbs. 6L LBZ Duramax Buyers Guide. Most of the exhaust systems youll find for the LLY Duramax can also be used on the LB7 (01-04), LBZ (06-07) and even the LMM (07. 6L LBZ Duramax, BD Diesel $. The coolant is both gaining and shedding heat (BTUs) and pressure from the time it leaves the combustion ports in the heads/block??? to its entry back at the water pump. Aluminum Radiator, fits Chevrolet/GMC 6. However, just like the LB7, the rods are on borrowed time at any point beyond 600rwhp. According to the owners manual, the coolant capacity is 25. 1/4 hose for degas line - $10. The Max-Flow Duramax Oil Cooler Upgrade kit includes an oversized oil cooler that has improved fluid dynamics to take full advantage of the cooling plates within the oil cooler. No Coolant Mishimoto Liquid Chill® Synthetic Engine Coolant, Full Strength 1 Gallon QTY : ($295. Merchant Automotive Allison 1000 Internal Wire Harness - 04-05 GM Duramax LLY 5 Speed Allison w/G Solenoid thoroughbreddiesel. Wallymart has Dex-Cool in the 50/50 mix for around $12. Most of the exhaust systems you’ll find for the LLY Duramax can also be used on the LB7 (’01-‘04), LBZ (’06-‘07) and even the LMM (’07. 6L LBZ Duramax Fluid Capacity Before you can get to work on servicing your truck, you need to know how much fluid or oil for a proper service re-fill. In response to the inadequate cooling system found on the LLY Duramax, numerous manufacturers sought to improve on the very flawed factory design. what kind of antifreeze??. 5-2005 the Duramax LLY was rated at 310 hp and 520 lb-ft of torque, which was only a 10hp increase over the 2004 LB7, but the power levels were. Single Best Upgrade for Every Duramax. Numbers generally fall between 15,000 lbs and 16,700 lbs though. Reply Save Like terryk · #9 · Oct 14, 2019 (Edited). Engine coolant temps would stay normal according to the OEM gauge at 210*. 6L LLY Duramax Maintenance Guide. Engine coolant flows through the block transferring heat from the engine to the radiator while also providing the cooling system with rust and corrosion inhibitors for. When adding, be sure to fill to the approximate level. Cooling System Capacity: 25. 3 quarts In english a little less than 6 gallons See more Reply Save Like R rdwilson Discussion Starter · #4 · Dec 24, 2005. Duramax History, Lesson 2: LLY. How to Change Antifreeze in a Duramax. I would recommend this (Very High Quality) setup for all LLY owners who tow heavy trailers or just want the added cooling capacity. 6L LB7 Duramax Maintenance guide goes over everything you need to know to properly maintain these trucks. Duramax Oil Cooler Upgrade Kit. It’s always good to keep some extra fluid and oil around, just in case you spill some of what you bought, or a leak develops later on. 6-liter LML Duramax V-8 engine is the capstone of GM’s Pre-L5P turbodiesels. When the LLY Duramax replaced the LB7, it offered several improvements. For All Cooling Systems, 16 Oz. 2021 LM2 Sierra 4x4 crew std box. The LLY has the largest turbo in it out of any other 6. Brought to you by Leaf Group Step 1 Turn the steering wheel turned all the way to the right. It was a huge success that ultimately led to the creation of other Duramax engines including the LBZ, LMM, LML, and L5P. LB7 Duramax Maintenance Schedule, Fluid Specs, And Parts>LB7 Duramax Maintenance Schedule, Fluid Specs, And Parts. For All Cooling Systems, 16 Oz. You can reach up to 350,000 miles with a well-maintained 6. This would requires coolant on both sides of the tank in order to properly maintain system pressure. 6L LML Duramax, Transmission Cooling for 2007. Fits Models: Chevy Silverado, GMC Sierra 6. – Greatly improves the cooling capacity. 6 coolant capacity and dexcool ratio?. Outside of it being the largest turbo, it had the largest compressor wheel and the tallest exhaust vanes. LB7 Duramax Maintenance Schedule, Fluid Specs, And Parts. 1 quarts Cooling System, Initial Fill24. To help those of you who currently own an LB7, or those who want to purchase one, we’ve compiled a pretty massive list of LB7 Duramax specs. 6 LLY Duramax Problems And How To Fix Them. GM increased oil film thickness by changing the main bearings’ profiles. Bottle (Treats 16 Quarts) In-Stock XDP X-TRA Cool Direct-Fit Replacement Radiator XD295 $379. 6L LBZ Duramax Maintenance Guide & Parts List. It also posted improvements in tow capacity, horsepower, and torque. 4 quarts or 24 Liters: Fuel: B20 Biodiesel Blend or Ultra Low Sulfur Diesel: Fuel Tank Size: 36 Gallons Standard: Max Engine Speed: 3450: Max Braking Speed: 11 Common. 6L LMM Duramax, Transmission Cooling for 2006-2007 6. Discussion Starter · Mar 12, 2008. DCA60L Fleetguard Cooling System Additive DCA4 PartAndFilters 1 $37 USD DCA4 Supplemental Coolant Additive Engine Block Cavitation Preventive-1 Gallon Pure Diesel Power 1 $549 USD Oil Cooler Upgrade Kit Banks 3 $335 USD GM 12706188 Duramax L5P Engine Oil Cooler Assembly 2020-2021 Repl, 12701592 2 $107 USD. Railer24. It also posted improvements in tow capacity, horsepower, and torque. I guessed wrong adding coolant enough times that I now either buy 50/50 or blend it in jugs before hand. A new, improved engine block casting was used. Like the LB7, the LLY Duramax can last a very long time if taken care of properly. He said he didnt know if the duramax had drain plugs or not, but that if it didnt he wasnt sure if he could flush out ALL the old. 5 2500HD, LLY, crewcab, 4x4, shortbed LBZ mouth piece, intake and airbox. 5-2005 LLY ! XDP carries all the parts and accessories you need for the best diesel performance. Cooling System Capacity: Allison 1000 Automatic Transmission : 20. This design of the dual-sided tank allows for maximum boil over protection while minimizing coolant loss. 5 - Current LMM Engine, with filter10. Oil Capacity: 10 quarts Fuel Type: Ultra-low-sulfur diesel and B20 Biodiesel Horsepower: 397 hp @ 3,000 rpm Torque: 765 lb-ft @ 1,600 rpm Weight: 835 pounds Dimensions: 30 inches (length), 30. 6L (VIN 1) Automatic Transmission 19. The coolant is both gaining and shedding heat (BTUs) and pressure from the time it leaves the combustion ports in the heads/block??? to its entry back at the water pump. Without a trailer, before any coolers, a run to the ranch in Texas heat (378 miles I-10) normal transmission temps were around 200*~210*. From what I understand the LLY equipped trucks had the smallest radiators out of all the Duramax pickups. Want to know the best upgrade for every Power Stroke and Cummins? Weve got you covered. Budget Diesel Mods: LB7 Duramax. 5 gallons of coolant and 3. Amazon 1 $14 USD Prestone AS105 Radiator Flush and Cleaner - 22 oz. The Duramax Diesel pickup trucks utilize a re-surge or dual-sided surge coolant expansion tank. 6L L5P Duramax Specs, Tow Ratings, And Model Year Changes. LB7 Duramax Fluids, parts Help Us Get to 1,000! 3. This design of the dual-sided tank allows for maximum boil over protection while minimizing coolant loss. 35 Gallons: 2500 hd duramax. The LLY Duramax was sold from 2004-2006 and tow capacity varies between model years. Cooling System : 25. If you have a different type of Duramax, check out our other maintenance guides. Fits 2001-2007 LB7 LLY LBZ 6. What the total coolant capacity on a duramax? Sent from AutoGuide. 6L Duramax engine was completely redesigned to enhance overall performance and reliability for 2006. A mechanic of mine said that Dexcool is terrible and that it has corrosive properties. For All Cooling Systems, 16 Oz. Of the first five generations of the Duramax (LB7, LLY, LBZ, LMM and LML), the LB7/LLY rod is the second lightest ever used. 6 Duramax engine truck. Chrysler’s Duramax is, without a doubt, one of the finest truck/SUV engines out there. XDP X-TRA Cool Direct-Fit Replacement Radiator XD295. Increased cooling capacity We have seen a 10-25 degree cooler oil temps during daily driving and towing use Bolt on replacement 35%-89% more surface area on the cooling stack Includes: Engine Oil Cooler Engine Oil Cooler Gasket Engine Oil Cooler Adapter Water Pump Outlet Pipe Gasket Engine Oil Cooler Adapter Gaskets Oil Cooler Inlet Pipe O-ring. The Max-Flow Duramax Oil Cooler Upgrade kit includes an oversized oil cooler that has improved fluid dynamics to take full advantage of the cooling plates within the oil cooler. sampsonite said: A few months ago my truck started to blow coolant out of the tank and I noticed bubbles in the tank as well I changed the egr and tube and it still is happing I checked the tank with with a block tester and it shows gases in the tank 8am any one help with advise thanks. 6 LLY Duramax Problems And How To Fix Them. 6L Duramax LB7/LLY. 0 qts Capacity w/ Oil Filter (9. If you have a different type of Duramax, check out our other maintenance. The LLY has the largest turbo in it out of any other 6. It was more powerful, capable, and reliable than GMs previous trucks. With having the coolant capacity at hand ,I dont recall and Im to lazy to look it up,drain off half of the capacity approx and refill with your choice of antifreeze. The LML Duramax shocked its rivals when it was revealed, offering 397 horsepower and 765 lb-ft of torque while simultaneously lowering emissions and improving fuel economy. From what I understand the LLY equipped trucks had the smallest radiators out of all the Duramax pickups. com>Best Method for Coolant Flush/Fill. The Duramax Diesel pickup trucks utilize a re-surge or dual-sided surge coolant expansion tank. Fluid Capacity and specs. Recheck fluid level after filling 2004 chevy: 2500 hd duramax. Conventional tow capacity. 5th Wheel tow capacity varies between years and depends on cab configuration. 6L Duramax LB7/LLY In-Stock XDP Billet Coolant Block-Off Plate XD344 $64. If your running MAG-HYTEC trans pans its brings the total capacity to 10 1/2 qts, the Allison deep pan brings the total to about 10 qts and the rear diff cover brings the. Cooling System Capacity: 25. 2007 chevy: duramax diesel/allision trans. 5 Quarts: Fuel: Diesel: Fuel Tank Size: 26 Gallons: Max Engine Speed: 11. How to Drain the Coolant On A DURAMAX LBZ 2006. Wallymart has Dex-Cool in the 50/50 mix for around $12. 5 gallons of distilled water in a 50-50 mixture. 2010-2012 LGH Van Surge Tank 2324781. 5 and 2005 Duramax trucks over heat when towing heavy in warm conditions. Kamashaa Motor 4 Row Radiator fit 2001-2005 Chevy Silverado 2500HD 3500 HD 6. Best Duramax Radiator Review & Buyer’s Guide. See less 2005 HD2500 Silverado 2WD EC LB (FE9 - Federal Emissions) 110K miles Goodyear Wranglers 265/70R/17,. In response to the inadequate cooling system found on the LLY Duramax, numerous manufacturers sought to improve on the very flawed factory design. External Oil Cooler: $715 If you plan to tow heavy with your modified LLY, you’ll want to make sure the cooling system has no chance of overheating. Of the first five generations of the Duramax (LB7, LLY, LBZ, LMM and LML), the LB7/LLY rod is the second lightest ever used. Duramax Diesel Engine: 10 Facts You Need to Know. Diesel Resource / Your go-to diesel experts DONT BE SHY. This would requires coolant on both sides of the tank in order to properly maintain system pressure. 6L LLY Duramax Maintenance Guide & Service Schedule. 🇺🇲🚛 2008 LMM 3500WT DRW Crew Cab, 8 Flat/GN, Workforce Alum Toolbox, Ride-Rite Air. Replacing worn factory cooling system components can help prevent overheating and damage to the engine. of torque – a very impressive result. Which is one of the reasons why the LLYs tend to run hotter. LLY with (Engineer837) DIY Aux radiator setup. 3 Quarts ZF 6-Speed Manual Transmission: 20. The figures below may not be exact. Motor mounts - $12. Merchant Automotive Allison 1000 Internal Wire Harness - 04-05 GM Duramax LLY 5 Speed Allison w/G Solenoid thoroughbreddiesel. The LLY Duramax was sold from 2004-2006 and tow capacity varies between model years. When your Duramax is due for its first cooling system service at 150,000 miles it will take 3. According to Prosource Diesel, miles above 350,000 miles are dubbed high mileage diesel pickups that are used with a Duramax engine servicing it. Oil Capacity: 10 quarts Fuel Type: Ultra-low-sulfur diesel and B20 Biodiesel Horsepower: 397 hp @ 3,000 rpm Torque: 765 lb-ft @ 1,600 rpm Weight: 835 pounds Dimensions: 30 inches (length), 30. 2 but is accompanied by a factory electric lift pump that supplies it a steady 55-60 psi—the CP4. Type: 3-Row Full Aluminum Radiator. 100-percent brazed aluminum core TIG-welded to perfection Magnetic drain plug included Natural aluminum finish Additional features below Your vehicle requires 4 bottles of full strength coolant or 7 bottles of premixed coolant. Increased cooling capacity We have seen a 10-25 degree cooler oil temps during daily driving and towing use Bolt on replacement 35%-89% more surface area on the cooling stack Includes: Engine Oil Cooler Engine Oil Cooler Gasket Engine Oil Cooler Adapter Water Pump Outlet Pipe Gasket Engine Oil Cooler Adapter Gaskets Oil Cooler Inlet Pipe O-ring. 1,979 Posts. #3 · Apr 5, 2016 (Edited) All 2004. Editor’s Choice. Premium Member. 15 Best LB7 Duramax Performance Upgrades. duramax diesel. Anything greater than 350,000 miles can also be safely called high mileage if it’s a Powerstroke diesel engine. Of the first five generations of the Duramax (LB7, LLY, LBZ, LMM and LML), the LB7/LLY rod is the second lightest ever used. He recommend flushing it all out and going with the green extended life coolant. It will run you $250 to $270, depending on where you purchase it. We offer a wide range of products to keep your Duramax healthy and functional, and with free shipping on orders over $49 in the U. Bi-weekly How to #23. At 1,155 grams apiece, only the rods. This was just with a good load (of feed corn) in the truck of about 2500lbs. 6L (VIN 1) Manual Transmission 19. Keep your 2004. 6L Duramax LB7/LLY In. 4 and it was given to me so i got 1100 bucks in it only way i would drive a ford 01 chevy ecsb 1500 hypertech chip flowmaster exhaust SOLD!!!!. I would recommend this (Very High Quality) setup for all LLY owners who tow heavy trailers or just want the added cooling capacity. the two coolents can be mixxed when they first came out with dexcool you were not sopose to mix. but after a few adjustments to the formula it is safe now! 99 ford superduty regcab long bed lariet 5. XDP X-TRA Cool Direct-Fit Replacement Radiator XD295. 0L LM2 Duramax Specs, Fuel Economy, and. 6L LLY Duramax Specifications & Information. It was more powerful, capable, and reliable than GM’s previous trucks. 2004. The LLY has the largest turbo in it out of any other 6. In comparing the LML Duramax with the 6. Most of the exhaust systems you’ll find for the LLY Duramax can also be used on the LB7 (’01-‘04), LBZ (’06-‘07) and even the LMM (’07. , placing your order is a breeze. If your running MAG-HYTEC trans pans its brings the total capacity to 10 1/2 qts, the Allison deep pan brings the total to about 10 qts and the rear diff cover brings the total to 8 qts. – Premium-quality aluminum core. Brass fittings for degas splice $13. com Free App 2005 LT,lly,ecsb,3 MF downpipe, 5 stainless MF exhaust, S&B intake,S&b mouthpiece,kryptonite tierods, pcv reroute,shimmed, efi live by ATP, 3 intercooler pipes,bilstein 5100s,Bilstein steering stabilizer,Edge insight cts, Fleece performance tap shifter, DJM 2. The coolant is both gaining and shedding heat (BTUs) and pressure from the time it leaves the combustion ports in the heads/block. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright. 6L L5P Duramax Performance Upgrades. When properly equipped, it can put out up to 500HP and 1000+ lb. Thermostats open and close depending on engine temperatures to allow coolant to flow through the engine. 6L LB7 Duramax Maintenance guide goes over everything you need to know to properly maintain these trucks. 100-percent brazed aluminum core TIG-welded to perfection Magnetic drain plug included Natural aluminum finish Additional features below Your vehicle requires 4 bottles of full strength coolant or 7 bottles of premixed coolant. With having the coolant capacity at hand ,I dont recall and Im to lazy to look it up,drain off half of the capacity approx and refill with your choice of antifreeze. Shut the engine down and let it cool completely. Like the LB7, the LLY Duramax can last a very long time if taken care of properly. 5 2500HD, LLY, crewcab, 4x4, shortbed LBZ mouth piece, intake and airbox. 6L LBZ Duramax Maintenance Guide & Parts List>Comprehensive 6. Kamashaa Motor 4 Row Radiator fit 2001-2005 Chevy Silverado 2500HD 3500 HD 6. Allow the fluid to circulate and top off as necessary. Truck used - 04 GMC 2500 HD Filling your rad is much different than it used to be. At 1,155 grams apiece, only the rods used in the LML (’11-‘16) were lighter. The 4-inch diameter, downpipe-back, aluminized exhaust system (shown) from Diamond Eye Performance is one such system. The total capacity of the cooling system is. When your Duramax is due for its first cooling system service at 150,000 miles it will take 3. After flushing the system several times where only water comes out, Im only able to add 2-1/4 gallons (9 quarts) of DEXCOOL before the reservoir is full. However, as you can imagine, all that raw power comes at a price. Reply Save Like terryk · #9 · Oct 14, 2019. Lly Duramax Coolant Capacity6L LB7 Duramax, Transmission Cooling for 2011-2016 6. It was more powerful, capable, and reliable than GM’s previous trucks. When the LLY Duramax replaced the LB7, it offered several improvements. 0L LM2 Duramax Specs, Fuel Economy, and Towing Capacity. Merchant Automotive Allison 1000 Internal Wire Harness - 04-05 GM Duramax LLY 5 Speed Allison w/G Solenoid thoroughbreddiesel. According to the owners manual, the coolant capacity is 25. 6 Duramax Diesel Problems (6 Major Issues Solved). com 8 $189 USD GMC Ortiz Custom Pods 5 $11 USD Heavy-Duty Synthetic Diesel Oil 5W-40 Amsoil. 6L Duramax LB7/LLY/LBZ/LMM/LML/L5P In-Stock XDP X-TRA Cool Direct-Fit Radiator Clutch Fan Blade XD374 $75.