What Oil To Run In A Forged Engine

[Johnny]

Johnny - I disagree 15w is too thick for a turbo, if you heard metal grinding on the turbo like you posted I'd say it';s a fair chance you had stuffed turbo bearings that would not be caused by the weight of the oil (cheap oil maybe?). I have run a 300V 15W-50 thru my pair of HKS 2530s for 5 years and they are both in perfect working order.

Hey man, my experience was on an s15 with a t28 so might be a bit different??? I had some motul 15w50 and when i put it in the turbo made a 'metallic rattle for a few seconds'

next morning it did the same thing and the car would be hesitant to rev when i drove it.

Immediately switched to a 5w40 and problem solved.

I didnt know 300v made a 15w50; is it any good? hows it on coldstart?

[Beer Baron]

castrol edge is rubbish imo. they spend a shitload more on marketing and BS advertisments than they do on making good oil. the cheap motul oils like turbolight are rubbish. the 300V is 100% synthetic ester and is head and shoulders above anything else i've used. it's the top of the tree. most of the other so called synthetics are not a full synthetic and are blended rubbish.

i put 300V in the legacy GT (JDM liberty GT basically) my mum drives! i put it in the lowly silvia which makes 230rwkw and needs a decent oil as it's running a trust turbo kit which relies on the engine oil for turbo lube and turbo cooling. and I have used it in the GTR(s) from day 1. never had a problem with any of them. I even did a UOA (used oil analysis) some time ago and the results were good. if you care about and value your engine 300V (in the appropriate weight) is the way to go. and the myth about it not lasting long as it's a race oil is rubbish. it's just a very good oil and will last longer than a poor one and still have all it's great properties (high film strength etc).

[Duffage]

How about Penrite sin 10, its 10w-70?

[r33_racer]

discopotato is on the money back on page 2.

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