Right I've done a search, and looked through hundreds of posts, but couldn't really find a definite answer.

On my last track day, after a few hard laps, I started to notice the down change from 5th to 4th got a bit harder and notchy... One of the other scooby lads told me that it was probably the gear box oil getting hot and that its probably old, and suggested I changed oil.

Right so after my search, people are recommending castrol syntrax, or Motul... now my car is just a dedicated track day car, so I want something that will be good for that, not just for every day road use... do i put castrol in?

 

Give Alyn a ring at ASPerformance 0191 4103770. He'll know the best stuff to put in and be able to mail order it to you.

 

Alyn is stuck in Florida atm, called past his today on the way back home, so will go see him when he's back.

Was just after people's opinions really

 

Any of the top GL5 spec synthetic 75w-90's will be ideal. Motul Gear300, Silkolene Syn5, Redline 75w-90, Millers CRX 75w-90nt, Amsoil Severe Gear 75w-90 all more than up to the job of dedicated track use http://www.opieoils.co.uk/c-673-75w-90.aspx

Cheers

Guy