gear oil [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: gear oil


JCA
01-16-2005, 12:50 AM
I was thinking I would change my differential fluids my question is do I need to add any friction additives? I believe it has a locking diff. Thanks John A

towin43
01-16-2005, 01:36 AM
No additives needed as you will need to use a GL-5 rated synthetic.

JCA
01-17-2005, 05:54 PM
Whats the synthetic oil people have been using? Thanks John A

DavesDmax
01-17-2005, 07:25 PM
Mobil 1 75W-90 is what I used.

Others perfer Schaffer's.

OEM is the Grape Juice @ $20.00 a quart.

Reineke
01-17-2005, 08:12 PM
Mobil 1 75W-90 was the only synthetic stuff I could find, so it was used.

Dura_Mike
01-17-2005, 10:06 PM
Mobil 1 75W-90 is what I used.

Others perfer Schaffer's.

OEM is the Grape Juice @ $20.00 a quart.

Mobil 1 75W-90 is what I used also. :ro)

Others perfer Schaffer's. :confused:

OEM is the Grape Juice @ $20.00 a quart. -:t
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LanduytG
01-18-2005, 05:59 AM
Amsoil Severe Gear 75W-90. If towing heavy loads on a daily basis then 75W-140.

Greg