maniac morgan

ok here goes

i have read loads of things on scooby oil, including most of the big end thread and the best 2 oils seem to be by general opinion

motul m300v 15/50
or
castrol rs motorsport 10/60

i drive my car reasonably hard on occasions but not all the time
i know the viscositys are different on these oils although similar which oil is best suited to my car which i only use at weekends, its always have oil subaru dealer has used. going to do a change myself on sat am so need to order oil today ideally

my car is
1995 wrx
decatted (both)
sports exhaust, jasma stamped but no name
grahame goode double piston dump valve
88,000 miles
Hks induction kit
prodrive programmable chip, boost early 2.2K mapping would have been altered to suit if needed, boost pressure normal,
p1 clutch

which one is most suited to my car and driving style

answers on a post card please techies

thanks in advance for any help

morgan

maniac morgan

forgot to mention has a touch of piston slap but nothing major

morgan

Jay m A

iTrader: (2)

I am no expert but TBH pick the easiest one to get delivered to your door! Both are excellent choices. If you cannot get any of these then Mobil 1 motorsport 15w50 will do.

As long as the oil change is carried out correctly, you warm up and warm down the engine pre and post full boost, check oil level regularly etc then you should be OK.

BTW IMO I'd lose the VTA dump valve if you have one, too much fuel can lead to borewash which can lead to oil contamination, petrol is a poor bearing lubricant.