As a fan of fully synth Mobil 1 Motorsport, would it be okay to use it in my newly acquired MY03 STI Type UK PPP?

Okay....I lied about the Yes / No answer bit....which SAE is reccomended as Halfords stock two types I believe?

Cheers,

Craig.

 

Use the 15/50 not the 0/40 and you'll be just fine.Although i think 10/40 is the recommended,I've been using 15/50 for a couple of years now and had no problems

 

Turbotits,

That'll do for me....anybody got any other pearls of wisdom before I buy the oil.

Craig.

 

Although heavier than recommended in the book for "normal" driving, 15/50 is fine. You may want to consider a lighter viscosity for winter use ie 5/40 Unfortunatly Mobil don't market this grade in the UK although it is/was supplied to Subaru dealers as the recommended full-synthetic for servicing.
JohnD

 

I believe that M1 only comes in 2 viscosities in the UK (0w-40 and 15w-50).

Neither is really suitable in my opinion (although others will disagree), I think your handbook states 5w-30 or 5w-40.

The 0w-40 would be the closest match but according the the experts on this forum M1 0w-40 will cause your engine to blow up.

There again, what do I know?

Cheers
Simon