stolen_monkey

Hi,
I'm going to service the motor this weekend,
What oil should I use? and/or what brand?

10/60 or
5/40

Car is a standard (engine wise) WRX 2003. Covered 48k

many thanks

AndyMoody

iTrader: (2)

Just do a search and you'll fine 100's of threads asking very similar question. The handbook tells you what grade oil to use. You could call Alyn @ AS Performance (do a Google) and he'll tell you what he recommends and supply accordingly.

stolen_monkey

i did mate.

The best post I found included the information below, but when I went to the local car parts place, he was adamant that 10/60 was good enough. So I searched again and I think it tends to depend on how modded the car is.
Mine is standard, so I should go with the handbook? Given I'm a complete novice, wondered if there was anything better than what is stated in the book, branding or otherwise:

Engine - Castrol Edge 5W/30, sump volume required = 4.5l

a_fisher

Mine is standard too I use silkoline 5W40 highly modded cars are recomended silkoline 10W50

Thats if you want fully synth, but it costs around £50 for 5 litres


Subaru use shell helix I think

Shark Man

5w-40 will be fine on a stock 2003 WRX

Alternate options are 5w-30 and 10w-40 - as listed in your handbook.

5w-40 has the best properties of both.

sime 71

yes mate they do but they only sell it in 1ltr bottles i dun mine the other week cost 17 odd quid for the oil and 95p for the sump washer