right guys i need to change my diff oil tomorrow but not sure what oil to get?
ive tryed searching but coulf not get a staright answer
thansk rick

 

As long as it's GL5 and 75-90ish, you'll be fine

 

Castrol diff oil, or any any #90 weight 'hypoid' (high pressure) gear oil.

From the Torsen.com website (the Honda S2000 has a Torsen diff):

"Can Torsen recommend an oil for my rear axle?
We suggest that you follow what is listed in your vehicle's owners manual. We do require that a GL4/GL5 class oil be used for the Torsen T-1. The T-1 requires an oil with extreme pressure additives for optimal function. Torsen works well in either synthetic or mineral base oils!"

HTH?
Steve.

 

would castrol racing b 373 be ok, its gl6 and 90?

 

I was under the impression they didn't do GL6 oils any more?

Since it isn't GL5, i'd suggest against it.

 

no they still sell it, it may be a bit hard to find do! I think i am goin to go ahead and use the b 373.

 

I just changed mine today, I used Castrol Syntrax Universal.