Lubricant recommendations
#1
Lubricant recommendations
I have a 2003 Suburban K-1500 LS and would like to change out all the fluids / lubricants to the front axle, rear axle, and transmission. What RPO codes or information can I post to get the most current recommendations for fluid-types and quantity. Also, is there a separate fluid for the transfer-case?
Thank you
Engine, Vortec 5300 V8 SFI (285 HP [212.6 kW] @ 5200 rpm, 325 lb.-ft. [441 N-m] @ 4000 rpm)
Transfer case, electronic Autotrac-inc: push-button controls
Axle rear, 3.73 ratio
4-wheel drive
Thank you
Engine, Vortec 5300 V8 SFI (285 HP [212.6 kW] @ 5200 rpm, 325 lb.-ft. [441 N-m] @ 4000 rpm)
Transfer case, electronic Autotrac-inc: push-button controls
Axle rear, 3.73 ratio
4-wheel drive
Last edited by rjdjbd; July 26th, 2015 at 6:02 PM.
#2
You can see all the specified fluids/lubricants in the maintenance part of your owners manual.
IIRC, GM specifies 80W90 for the front axle, 75W90 synthetic for the rear. Upgrading the front axle to synthetic is probably a good idea.
Dexron III is specified for the transmission. You might have a hard time finding it. Dexron VI is what's used in '07+ trucks. You can use it in yours; it has better high-temp properties and durability.
The GMT800 trucks use the blue stuff for the transfer case - Auto Trak II.
If you really want to get into details and enough information to make your head explode, check out bobistheoilguy.com
IIRC, GM specifies 80W90 for the front axle, 75W90 synthetic for the rear. Upgrading the front axle to synthetic is probably a good idea.
Dexron III is specified for the transmission. You might have a hard time finding it. Dexron VI is what's used in '07+ trucks. You can use it in yours; it has better high-temp properties and durability.
The GMT800 trucks use the blue stuff for the transfer case - Auto Trak II.
If you really want to get into details and enough information to make your head explode, check out bobistheoilguy.com
#3
Thanks for the information. I did look in my manual, but didn't actually see the specifics in terms of quantity per cavity, so I'm no sure ho much I need to buy of each lubricant.
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