.. as title, I have a Subaru Impreza WRX '03 model with PPP fitted.
30k service is coming up and want to get the oil ready, but which do I go for ?.
Have been recommended Silkolene 5w40 by one firm but then when you look at others they state oil like 15w50 or 10w60 .
So what is the general opinion, would I run at risk by using the wrong oil in this engine or are any of the above specs suitable ?.

Help appreciated .

Mark.

 

Try motul 300v 5w40 fully synthetic, probably the best oil for your scoob

Tony

 

motul 300v 15w50 in my newage sti never been any probs

 

mobil 1 15/50

 

With winter coming on I would certainly not put in anything heavier than a 10w The 5w/40 Silkolene sounds perfect as does the Motul, as Tony suggests. I use Millers CFS 5w/40 in winter in my 03 STi
JohnD

 

The 10/40 semi Subaru recommend will be fine. Anything better will be even finer. Millers CFS 10/40 here.. Don't get too hung up on it............

 

total quartz 9000 5w40 is a good oil which i recently put in my 2002 sti

 

silkolene pro s 10/50 for me, the best oil i have ever run

 

Looks like 5w40 is the favoured choice.
Thanks for all your input peeps, appreciated .