Can anyone tell me what is the best type and grade of oil to use in classic wrx?I realise there is a varied opinion on this but im looking for advise.
Thank you

 

Motul 15/50

Castrol RS 10/60

mobil 1 15/50

 

i use 5w30 fully syntheic as recomend in the amercian hynes manual for the turbo legacy, with the same engine. but it is a great mystery oil for an impreza i find!

 

Fully synth 10W40 - 10W60.

Previous dealer used Shell Helix Ultra (or some other premium word)
Current dealer plays in Castrol RS 10W60.


Jeremy.

 

Cheers all
I will give Castrol RS a go,i have used it in other cars.

 

5w30 is too thin, the normal oil used by Subaru UK is 10w40 semi synthetic, most people change to the first posted oils which are better.

Tony

PS, Julian, if i see you today, ill have my dutch manual with the correct oil grades in for you to have a look at so forget what the yanks say, its not what you should use

 

5w/30 is too thin at high temperatures IMO. Needs to have warm temp viscosity of at the very least 40w

 

went to halfords and they didnt have any of the mentioned oils the castrol RS and the mob 1 were both 5/30.
Never mind gave the car a polish instead.

 

so wot does the dutch book recomend? i've run mine for about 2 years on 5w 30 fully synth. so will i have done any damage? oh i also change it every 2k miles, and the oil filter with it.

 

The dutch handbook has the same recommendations as the uk classic handbook, it says (off the top of my head as ive put the thing somewhere and cant find it now... DOH!)
5w30 shell fully synthetic, can be run in the sport without problems, for turbo engines its recommended for temps of 0 dec C and below (there is also a part about not pushing the car hard with this oil in it), -20 to +40 has a 10w40 recommendation (semi synthetic).

Tony

 

but will i have harmed my baby?