Originally Posted by chookgb

it also depends on the brand of oil you are using, my observations and opinions are below

if you are using xray oils in the NT1 diffs you need to take 50,000 off the bottles number
example - 80,000 is equal to approx 30,000.

i am currently running 200,000 xray oil in the front to achieve 150,000
and 80,000 xray oil in the rear to achieve 30,000