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Gearbox and diff oils

JohnH - 4/6/16 at 07:08 PM

Hi, just wondering if anyone can tell me which diff oil (Sierra) and type 9 gearbox oil is the best ? Cheers

cliftyhanger - 5/6/16 at 06:49 AM

gearbox, BGH recommended this
http://www.halfords.com/motoring/engine-oils-fluids/gearbox-oil/comma-gear-oil-sx75w-90-gl4-1l

note the GL4, that is (probably) important!

Diff from the same car likely to require the same oil, though I believe originally specced at ep90, poss GL5?

Oddified - 5/6/16 at 08:22 PM

Over the years i've run all sorts in the type 9 boxes (standard, tranx and now spc) including the Coma oil and the best i've found is Redline MTL 75w80. Quicker, cleaner, crisper gear changes in all temperatures.

Ian