carl heath

what rear diff oil on my 02 sti type uk,and have been reccomended syntrax for gearbox is that ok to use ?also running about 330 bhp so shall i use 5w/40 or 10w/40 in the engine. i know this has probably been asked 10 million times but want the best in it,cheers

JohnD

iTrader: (5)

The Syntrax (Driveline) will be fine in the rear diff.
For summer use I'd say 10w/40 most of which are semi-synthetic although Millers and Motul do full stn. versions of that grade.

JohnD