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2005 GMC SIERRA 2500 HD motor oil
to get more miles per tank and keep
your engine running with the least
amount of downtime.

Amsoil beats the pants off of Mobil 1™ Extended

Royal Purple & Red Line Oils - Worst Cold Crank Viscosity

Does this stuff really work?

Company History

Documented testimonials

Van goes 930,599 miles on AMSOIL Motor Oil

Great oil for Camaro's

Don't use additives

NASCAR teams using our products

GEO Prizm goes 362,000 miles

Gov't testing to cut costs

800 horsepower Sprint Car

Pest Control Company Saves Money

World's Fasted 4 Cylinder World Record

Police fleet makes switch

Jeep owner sees increased MPG

GMC lubrication for vehicle upkeep.

Click one below to change years:
2002 GMC SIERRA 2500 HD 6.0L
2002 GMC SIERRA 2500 HD 6.6L
2002 GMC SIERRA 2500 HD 8.1L
2003 GMC SIERRA 2500 HD 6.0L
2003 GMC SIERRA 2500 HD 6.6L
2003 GMC SIERRA 2500 HD 8.1L

Free shipping on orders over $100.00

Bobby Unser video when he won Pikes Peek

Benefits over the oil you're using now:
-NO sludge
-Increases gas mileage
-Increases horsepower
-Increases torque
-Reduced oil consumption (drastic in many cases)
-Significantly less oil changes for most people
-More miles per tank
-Stops wear and tear
-Lower emissions
-Save the planet
-Doesn't use fossil oil
-Spark plugs last longer
-Avoid future engine overhauls
-Keep your car longer
-Peace of mind
-Great for those who often neglect car maintenance
-Superior quality over what car dealers or quick lubes have to offer

Amsoil Discount Program

Facts, NOT HYPE!

See why you should be using AMSOIL instead of Castrol, Valvoline, Mobil, Pennzoil or Quaker State

Why you should be using AMSOIL instead of Mobil 1

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All products ship from the closest warehouse based on your location. Shipping times can be as fast as 1 day.

Every oil company says they're the best. Amsoil is the only one that proves it in writing and proudly gives out its ASTM results.

"I have seen an 8% increase in fuel economy in my Corvette engine powered Z28. With my driving I'm spending about $3,000 per year in fuel. An 8% savings comes out to about $240 per year. With my Amsoil oil and filter changes costing me about $55, that makes Amsoil FREE for me, plus I am profiting almost $200 from it. I really don't see how people say Amsoil is expensive. When you're being compensating by something else to offset the cost, how can this be expensive?" -Robert Riley

Dynamometer testing performed by Dyno-Pro, an independent shop in Illinois, showed that compared to a popular 10W-30 motor oil, series 2000 Synthetic 0W-30 provided an average of 2.22 horsepower increase and average of 2.75 foot-pounds torque increase.

Amsoil racing video on television.

Another cool Amsoil web site to check out
AMSOIL is the pioneer of synthetic oil used in cars in the US.
Have questions regarding this GMC SIERRA 2500 HD?
After normal business hours sales (954) 442-5380

Motor oil and Filters: 2005 GMC SIERRA 2500 HD 6.6L

Suggested oil change belonging to 2005 SIERRA 2500 HD vehicle

Click another choice: Year, make, model (change vehicles)
Click on your engine size: 6.0L, 6.6L, 8.1L,
These are all to be used in your vehicle.

To purchase what you see on this web page, see ordering instructions below to add to shopping cart!
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To order on-line, simply click the ADD TO CART buttons below on the lubes and filters you need. All products are drop-shipped from a one of 14 warehouses strategically placed throughout the US and Canada. Shipping is fast and cheap! If you wish to order over the phone, call the highlighted phone number in yellow above right now.

Feel free to share the link of this web page on any message forums that you are on as long as this vehicle matches its subject matter. Thank you.
Hover your mouse over any thumbnail below: With performance results like these and your current lube costing more since it has to be changed more often, it's crazy to not use AMSOIL.
Vehicle Information :
Year 2005
Make GMC
Model SIERRA 2500 HD
Engine Size 6.6L
Engine # 2 TDI
Quarts 10 (Engine, with filter)

Click the "Add to Cart" button and add the suggested quantities on the following page. Important: Click the BACK BUTTON when finished for each item to return to this screen until you're done with all items. Then click Checkout after you've added your last item to the cart.



Stock Number


Discount Option Money Saving


First time customers: Adding this Preferred Customer trial to the shopping cart you will automatically get 25% discounts on your entire order as well as future orders during the next 6 months! By adding this option you are essentially ordering at DEALER COST. Pay what dealers pay by using this option! All the smart buyers go with this. There's no minimum or maximum orders. (Highly suggested for orders over $100!)


Any one of the filters below are suitable to be used in your vehicle. Pick the one that best meets your driving distance each year and match it up with the corresponding lube . If you drive 25,000 miles in one year, order multiple order MANN or WIX filters if needed to go with a 25,000 mile lubrication when not using an AMSOIL EaO 25,000 mile oil filter. Have an extra quart handy to top off when necessary.

Filter Cabin WIX High Quality Air Filter - #1 filter in NASCAR! 46678-EA
Filter WIX High Quality Oil Filter - #1 filter in NASCAR. Lasts up to 10,000 miles when used with AMSOIL oils depending on the oil being used. Spin-on and cartridge available. Appropriate one will be sent based on your vehicle. 57202-EA
Filter Amsoil Absolute Efficiency Filter. Lasts up to 25,000 miles or 1 full year GUARANTEED before needing to be changed. That's up to 8x longer than when used with a conventional oil and filter. This is a great time and money saver. Highly advocated to be used with AMSOIL's longer lasting high performance fully synthetic oil to maximize long-term benefit. EAO52-EA
Filter Transmission Filter
(Note: Allison - Shallow Pan )
Filter Transmission Filter
(Note: Allison - Spin-on )

The lubricants displayed below are the ones to be used in your GMC SIERRA 2500 HD. Out of all the lubricants that AMSOIL makes, these are the ones that meet the requirements put out by GMC. Under Federal law, the use of AMSOIL products CANNOT void your manufacturer's warranty. AMSOIL products backed by a written warranty. These are all-season oils. No need to waste time performing totally unnecessary maintenance because of how hot or cold it is outside when using AMSOIL.

2005 SIERRA 2500 HD motor oil. Either of the lubricants below are specific for this vehicle and meet manufacture's recommended lubrication specification.

Oil 15W-40 OEM Diesel oilAMSOIL Premium Synthetic Diesel Oil. Meets API CJ-4 specifications and is suitable for both modern and older diesel applications. This lubricant is compatible in any engine requiring the following specifications: API CJ-4, CI-4+, SM, ACEA E9, DDC 93K218, Cummins CES 20081, MB 228.31, CAT ECF-3, ECF-2, ECF-1-a, Mack EO-O Plus, Volvo VDS-4, MAN 3575, Renault RLD-3, MTU Type 2.1. TBN: 9.0. Freezing point: -36F. Four-ball wear test (ASTM-D4172): 0.53. Oil change interval: Change at OEM intervals as indicated in owner's manual. OEDQT-EA
Oil 15W-40 Diesel oilAMSOIL Premium API CJ-4 Synthetic 15W-40 Diesel Oil required by 2007 and newer diesel engines. Can go further with oil analysis and AMSOIL bypass filters. Increases MPG over conventional diesel oil which ends up paying for the oil. Four-ball wear test (ASTM D-4172) 0.51. TBN: 10.4. Freezing point: -40F. Oil change interval: Up to three times the OEM drain interval in diesel engines. DMEQT-EA
Oil 15W-40 Diesel oil.  The best for vehicles 2006 and older. Lasts an amazing 25,000 miles or one year.AMSOIL 15W-40 fully synthetic diesel oil. If you do towing or put high loads on your engine, use this diesel oil in place of the 5W-30 diesel oil. TBN: 12.1. Four-ball wear test (ASTM D-4172) 0.35. Freezing point: -44F. Oil change interval: Up to three times the OEM drain interval in diesel engines. AMEQT-EA
Flush Engine Flush used to clean out effects of ethanolAmsoil Engine Flush - suggested if you have over 10,000 miles on the engine and never used synthetic oil before. (To be used with gasoline-powered engines & small lawn equipment. Works in gas or diesel engines.) Easy to use. Just pour in with old oil, let idle around 15 minutes (do not drive!) and drain old oil and change filter as usual. FLSHCN
Cold Flow Diesel Cold FlowImprove diesel fuel in cold-weather below 40°F. Prevent fuel filter clogging when diesel fuel crystalizes in cold weather. ACFCN-EA
P.I. Diesel Cetane Boost AdditiveAMSOIL Cetane Boost Diesel Fuel Additive. Increases fuel economy up to 2%. Quieter, smoother operation. Extends battery and starter life. Saves on engine wear and tear. Helps prevent cracked pistons and rings.Reduces misfiring during warm-up and at low temperatures. Improves cold temperature starting. Use with every new tank of fuel. ACBCN-EA
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These are part numbers above are specifically used with this vehicle.
Gasoline Motorcycle Diesel
Diesel fuel additives Gasoline additives 4-stroke
European 2-Stroke Racing
Automatic Manual Racing

AMSOIL is the official motor oil of all of these companies and organizationsAmsoil is great to be used in your motor and is the official lubricant belonging to these organizations

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Advocated oil change and air filter belonging to this vehicle.
The DIY (DO IT YOURSELF) best oil change for a 2005 GMC SIERRA 2500 HD will keep your car running at its optimum! The fuel savings, reduced down time and more miles per tank make AMSOIL well worth the switch. Double check for your GMC SIERRA 2500 HD

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