Can somebody tell me which is more suitable for WRX STi4:
i) Mobil 1 5W50
ii) Mobil 1 0W40 (Tri-Synthetic)

The 0W40 is slightly more expensive, but looks like a newer formula? and mentions it exceeds requirements for all major car brands (incl BMW, Porsche)

I've already bought the 0W40 so hope I didn't choose the wrong one, duh!

Should also mention, the weather gets quite hot here (Hongkong) around 30 degC

Anyone know? please reply, since the scoobs going in for service tomorrow...


[This message has been edited by Andy Banks (edited 13-10-1999).]

[This message has been edited by Andy Banks (edited 13-10-1999).]

 

Andy, you need the THICKER one which is badged MOBIL 1 MOTORSPORT