Have I been using the wrong gear oil

[normzo]

Ive been using valvoline synthetic 85w 140 in my diffs and transfer case will this be okay thanks

 

[joey]

It will be fine as long as it doesn't get real cold where you are located.... the better oil would be an 75-90 gear oil.... but it will not hurt you....just reduce fuel economy a little.

 

[normzo]

hey Joey what would be too cold I live outside of richmond va thanks

 

[joey]

Outside of Richmond in the Winter (I lived in VA BCH for 12 years) would probably be a little cold for the 140, but then again last winter I was running the 140. The big difference is it feels very sluggish when you first get going and I am sure it effected fuel economy. Yep you learn from mistakes....I will not do that again.

 

[mge_1]

It will be fine as long as it doesn't get real cold where you are located.... the better oil would be an 75-90 gear oil.... but it will not hurt you....just reduce fuel economy a little.

do you use 75/90 synthetic or regular?