best manual 6 spd trans. oil - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Cloudsurfer · 10-30-2009, 02:38 PM

I have the Redline 75W90 in my box right now, and it's fine. The Mobil 1 you buy in the gallon container (which is a completely different product than the stuff you buy in a quart) is excellent, and is supposedly used by Farnbacher Loles.

While I have not tried it, according to Paul Guard (of Guard Transmission fame), the best stuff available is from Lubrication Engineers.

CJ_Boxster · 10-30-2009, 03:15 PM

I've used Royal Purple in my 5 speed boxster and I liked it.