Originally Posted by
Barry_Hughes
Why do you refuse to put thicker oil in the rear diff?
If you look on Xray's own forum the top drivers all run with thicker oil.
I run on carpet & ashpalt, when I first had my T4 I ran with kit oil in the rear diff changed it to 2000 and would NEVER go back to 700, the car is so much better with the thicker oil.
Never ever say no to any change advised, try it, if you don't like the difference it makes go back, but it is always worth trying something
My reasoning is... Thicker oil will give more even power to both rear wheels upon acceleration and make the rear end loose. Thinner diff oil will give more power to the wheel with less grip and the rear end will have less contribution than the front end upon acceleration which will make the car more stable coming out of a turn.
If my problem is understeering I would change my diff oil to thicker one.