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Maintenance & Fluids Discuss products, techniques, intervals, and fluids for maintaining your GM truck including oil and oil additives, fuel and fuel additives, alternative fuels (Bio-D, SVO, WVO), filters, grease, and maintenance specific tools.

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Old 01-08-2012, 01:26 AM   #1 (permalink)
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SoCal Diesel Trucks Member

nv 4500 transmission fluid recomendation

The only oil that I have been able to find that I am positive is correct is from the dealer, either gm or dodge.
Amsoil has a fluid that I believe will work but the dealer is closer and I don't have to do the amsoil dance.

Does anyone know of a suitable alternative? From what I know gl4 is specified because of the syncro material and gl5 is supposed to degrade it. Gl5 is supposed to be backward compatible but apparently is not. My schaeffer rep said that they did not have a product that is suitable.

thank you

2008 ccsb; pvc reroute, egr removed (thanks Paul), Banks CAC, dpf delete, mbrp downpipe to 4" straight pipe, air dog 2, bd manifold, high speed floormats
1996 slt cummins sdx 5x12's, some wind, all of the usual bolt on stuff
2005 Liberty KJ w/motori diesel; elephant hose, egr delete, tuned by Green Diesel
thanks to A&A Muffler, Omega Injection, Alligator Performance, Pine Valley Auto
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Old 01-08-2012, 01:30 AM   #2 (permalink)
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I got mine from the Dodge dealer as it was much cheaper then GM dealer and same stuff. I am to afraid to run anything else and this is something that gets done very seldom so why cheap out or chance it?

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Old 01-08-2012, 06:50 AM   #3 (permalink)
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At times, some of the chemistry in a GL-5 will not be the best for some internal components (brass, IIRC ...). That in mind, GL-4 specific lubes are a better decision.

There are some still on the market; shop around.

Of note: Pennzoil has a synthetic that is available in either GL-4 or GL-5. They also have a MTF specific for your synchromesh tranny.

There are other brands too such as Delo:

etc ...
2006 White Chevy CC 4x4 3500 SRW W/T
6.6L Duramax LBZ / Allison trans / manual T-case with Riverside Gear pump-rub-elimination upgrade / coolant bypass filter / PCV reroute
Fumoto drain valve / Power Steering Cooler added / Inverted Tranny Cooler / Autometer pyrometer / home-made diff cover / upgraded x-fer case skid plate

Member #2 of the "OIL is OIL" association
I used to use dino oil because I didn't know any better.
Then, I used synthetics because I thought they were "best".
Now, I use dino, because I know the truth!

Last edited by dnewton3; 01-08-2012 at 07:02 AM.
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Old 01-11-2012, 12:08 AM   #4 (permalink)
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Nv 4500

Depending where you live GM or Do_g_ will have the best price. Where I live I found the GM had the best price. Get a product information bocklet on oils ( everyone should have one or more!!!) The trans has ?? brass in it and the GL-5 oil will not work with the brass you will need the GL-4. My owners manual said I could use ???? Think it was (Chevron's) oil 1804 when I phone them the gent told me that he though that that oil was a GL-1 oil and was only sold in 45 GL drums so that was no good.
2004 2500 4x4 LB7 Black charcoal
2009 5500 Graystone metallic Crew Cab 4x4

In storeage, passing the time while I getting the money ready for changing it to a daily driver. It actually runs like a diesel should! Can't wait to start engineering the additions for the truck!
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