Hi,

Im wanting to do an oil change at the weekend to my blobeye wrx. This will be the first time since its been modded. Its running 320bhp with standard internals and I was wondering what the best grade and brand of oil to use would be?

Thanks Jon.

 

You have several options, a 5w40 fully synth, a 10w40 fully synth, a 10w50 fully synth or a 15w50 fully synth.

Tony

 

Any of those weights will be fine ^^^

But I think the specific 'recommended' ones are 5W-30 and 5W-40 for your car.

 

From that list 10W50 is my choice, thin when it's cold and better high temp. protection...

Mine is an STI and I use 10W60 for the odd trackday.

All IMHO.

dunx

 

10W-50 suits most apps IMO.

Indeed, I'm getting oil/filter changed at APi on Sat, with own supplied Silkolene Pro S 10W-50...

 

Wll be putting 10W-40 in my Hawkeye STI at the next oil change. It's currently got 5w-40 in it.

 

Thanks for everyones replys. Theres so much choice, but its looking like 10w60 as the guy who gets me the oil cant get 10w50. Im i making the right choice?

 

Don't put a 60 in! It's treacle-like. Considerably thicker than a 50, when at 100deg C.

A 50 is as far as you need to go. If a 50's not available, use a 10W-40.........

 

10 is the cold rating, 60 the hot, the higher the hot rating the thicker the oil, so a 60 is about twice as thick as a 40 at 100 deg c, do you really want that? it slows you down and wont protect as well.....

Tony

 

I see I think Ill have 10w40. Any thoughts on castrol edge?

 

Millers do a nice 10w40 and 10w50 fully synth oil, probably a good one to go for

Tony

 

10w-60 is too thick, it doesn't flow quick enough in that engine to dissipate heat. I think I'd go with a 5w-40 unless you track the car, in which case I'd go for a 10w-50, but a good ester based one.

5w-40, 5w-40 oil, 5w40, 5w/40
10w-50 oil

Silkolene Pro S, Motul 300V, Redline, Millers CFS and Gulf Competition are the ones to go for.

 

I think 10w60 is a no go. You know how youve put 10w50 would be good if i use it for track. Well i dont use it for track but when i use the car it gets lets say gets a good work out. so would that be a factor.

 

I'd use a 50 if you like to work the car at the top of the rev range for reasonably extended periods, yes.