Lucas Synthetic Gear Oil

[HeavyHauler]

I've got a Mag-Hytec rear end cover on order from Geno's, and I would really like to try this stuff. It's 75-90 and I called Lucas and they said it would be rated at something around a GL-9 - they said it was bulletproof.



Does anyone know why I couldn't use this in my rear end?



Thanks for the help.



Here's a link.

 

[rfoust]

I have always used the regular Lucas oil stabilizer in my front and rear ends. 100%---that stuff is at least 75-90.

I was eyeballin' the synthetic stuff though---more than likely I will use it when I get to the point that I have to change out the diffs.

 

[Beast2B]

Do you tow heavy? I believe a heavier lube is recommended for heavy towing. The only other thing may be the need for a friction modifier if you have the LSD.