I need to top up my oil on my WRX however I am confused which oil to use. Everything online (Halfirds, Eurocarparts etc.) says 5/30 whereas Subaru4You website who serived my car recommends 10/60.

 

What oil do people use???

Depends on how modified and what year it is etc etc www.opieoils.co.uk is good and we get discount.

Mine runs 10-40 full or semi synth depending on the season

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At the moment its standard apart from a panel filter but I am ordering a CAT back exhaust and BoV at the end of the week. Well I get the 15% off Halfords too :)

I'm moderately modified. I use Miller's cfs 10w40.

yeah one of the member told me about millers, im due an oil change thats what im going to use

Subaru4you only use Millers

Would 60 not be a bit too thin at 100°?

First number in oil grades is for flow

The lower the number the thinner the oil is (thinner oil flows quicker)

The second number is to grade the thickness at 100°

Higher the number the thicker the oil is when up to 100° running temp

Think most recommend 5 w 30 for newage or 10w 40 if it's a bit noisy/done a few miles

10w 40 for classics or 10w 50 if it's got a bit piston slap or been to the moon and back

I used to run millers cfs 10w 40 in my standard ish uk turbo and then upped it to 10w 50 as the piston slap got worse after my remap .

I currently run millers nano drive 10 w 60 but only because the race spec pistons are noisy as fook until up to temp .

Interesting to know you stuck 10-50 in the classic, never mind the 10-40's going in sat,

With the outside temps in the 20's my early morning slap is none existent at the moment [emoji51]

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Thicker not thinner [emoji20] dropped the ball.

My hatch is on a 57 plate and on 70k so should I stick to the 10-60?

Oil grades are a bit of a can of worms as loads of people have different opinions. I'd stick with what you normally use if it's not noisy when cold (to thin) or warms up to quickly (to thick causing excessive friction)

Plus I'm far from a expert in oil advice and can only comment on my own experiences with my classics

Imo Tim @ opie oils will give you a much better informed choice of which oil suits your car and needs

opie oils reckon the same as Halfords at 5-30W. I need the oil urgently as i am that low so wont be able to order through them :(

Maybe just get enough to top up from Halfords and order decent oil and a filter from opie for the next service

summer 10w40 fine, winter 5w40 good option, high hp & track use then 10w60 good.

for your mileage & if mainly being used as road car then 5w40 all year round would be fine. Millers cfs is a good oil, I use it a lot in subarus & nissans.

Dipped the oil and worked out that I had enough to last me for three days at least so brought the Millers 10-60 which is what the car was serviced with. Went for the 5 litre so I can keep a supply (just encase!)