front differential fluid

[opfor2]

So what type of front differential fluid do I use?

 

[89Suburban]

Doesn't your owners manual say?

 

[swathdiver]

So what type of front differential fluid do I use?

80W90 conventional gear oil. Since I cannot find the ACDelco fluid anymore (89021671) so we've been using Lucas 10043 for the last 4-5 years. 1.51 quarts.

 

[opfor2]

Doesn't your owners manual say?

I was to lazy to look it up last night

 

[intheburbs]

I just use 75w90 synthetic in both axles.

 

[89Suburban]

I was to lazy to look it up last night

I feel you. Here is what it says for my '07.

 

[donjetman]

synthetic Mobil Delvac 1 75w-90 or Amsoil severe gear 75w-90 in all my vehicles for the last 15 yrs.
Recently I switched the Yukon to synthetic Redline 75w-90 front and rear because I got it at 75% off the retail price and it was time.