Hi all, what the best oil to use? mine has 137k now! should it be 80-140? or just stick to 75-90 or straight 90??
Thanks everyone!

 

75W90 GL5 (never could find the GL5!)

I used some Castrol in the end - no bother and the car got a good hiding.

 

You will listen many differnt opinions for sure. My reply is in the following topic which might help you to see also some preferences on diff oil from the forum members

https://www.s2ki.com/s2000/topic/787...#entry18693959

 

My handbook says hypoid 90, I have just changed my diff oil and the parts guy gave me a litre of Shell ep80/90 (which they use in the service bays) and that has sorted the moaning noises my diff was making, now all quiet.

Cheers.....Tony..

 

Cheers for the info fellas i have read on here though people are sometimes using a 80-140??

 

I've used Motul PA90 (or something like that1?) for ages and my diff hasn't fallen out in pieces.

 

What are the opinions on additives like ZX1??? worth it??

 

I used Redline 75W90 GL5 last time