service coming up.......... I got some oil of a mate & want to know if it's good for the WRX.
It's Shell Helix Ultra 5W-40
Any help would be appreciated!

[Edited by Nikolaus - 3/30/2003 2:13:36 PM]

 

Need 10w

Rob

 

Cheers Rob, any paticular make, mineral, semi or synthetic?

 

My mechanic uses 5w/40 on all the Scoobs he services. Valvoline gold, or summut like that.

Tim

 

Everyone has their own opinion of what to use.
It all depends TBH.
Personally i use Mobil 1 Motorsport 15w/50(not normal Mobil 1 0w/40 )or Castrol RS 10w/60.
They are both reasonably priced and widely available. Halfords/motor factors etc etc.
The general opinion seems to be that fully synthetic is not good for our scoobs so you really want to stay away from them and stick to a good semi synthetic.. ie. above.

Rob

 

My understanding is that Mobil 1 Motorsport and Castrol RS are both fully synthetic and are best. Semi-synthetics (eg Castrol Magnatec/Shell Helix/Esso Ultra) are OK but not the best for Scoobs.

 

yeah, I know Mobil 1's fully synth......... seems to be a bit of conflict here, synth or semi.......... I want the best!!

 

I do stand corrected, i meant that oil that is too thin should not be used ie. 0w/40 etc

Rob

 

No probs Rob, thanks for the info, I've just found an interesting website ( http://www.m161fhr.pwp.blueyonder.co.uk/ ) about what oil to use in your Impreza