I think everyone has there prefered oils to be honest. Depending on the condition of you box. I use castral syntrax universal which was advised by two people (one a company) that race these with std box. I then use a tube of molyslip that helps eliminate crunching. Mine does not crunch but still put it in.
Tranny i use Silkolene silktran 5 and diff use Motul lsd oil as rear diff is limited slip dif.
