Silvia Club of NSW

hi All,

pretty much i have always used a 10W-40 since i have had my S15, it has always been synthetic and i prety much only have used Motul 300V however i want to try something a little different/cheaper maybe something like castrol edge or Penrite Sin, now looking at those oils the oil grads are either a 5W-30 or 10W-60 or so, is it ok to go down to a 5 weight or should i stick with the 10 weight, if so will a 10W-60 be ok?

the car is mildly modified and makes 225kw and max boost is 20psi.

I use ELF 10w40 mineral

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Disclaimer: If you have'nt worked it out by now I CANT SPELL FOR SHIT.

10W60 is too thick for the SR. 10W40 is a good weight, I'd be sticking with that. 10W30 or 5W30 would be fine too.

The W rating isnt as important as the latter number, as it doesn't really get that cold here in Australia. Eg 10W60 is going to be a hell of a lot thicker than a 10W40 in our climates from cold start to running temps.

why dont you just use the motul 8100 if you want something cheaper


its a 5W40 i think

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I dont understand every ones obsetion with synthetic oil????

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Disclaimer: If you have'nt worked it out by now I CANT SPELL FOR SHIT.

stability at higher temps mainly for me

I have run Mobil 1 10W-30 in my rb25 since it became readily available in 5L, I changed from their old 5W-50 which is a bit too much of a spread, truth be told.

Here's a couple of pics of the top end while i was removing the hks cams (which are about 15k old) regularly tracked and revved to 7400rpm, well over the 6850 limiter imposed by nissan.




Not a mark on the lobes (the stock cams have a blue line), the insides of the cam covers and head are immaculate and there are no marks on the wearing surfaces.

What more could you ask for?

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meh

ive use repsol 10-40w (elite i think) full syn. one of the cheaper full synthetics. (+ larger sump)

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"Best Signature Ever Inserted Here"

would a 5W-30 be to thin, the car has about 100K on the engine so it ins't exactly a new engine, it is well looked after though.

5W30 isn't too thin at all (its probably the most popular grade in the USA!). If your car doesn't see extensive track work, its an ideal weight to use. For shits n giggles I use a 0W20.

really i think you should look in your hand book, and think about the ambient temp's in aus.

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"Best Signature Ever Inserted Here"

i just did a service on my mates S15 and used penrite SIN 5 and it runs beutifully

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once you boost you never go back!

I've run SIN 5 in mine for like a year now and it's been sweet. Changed every 5000ks.

I got my mates 180SX on it as well he's done 3 changes on it and said overall running has improved noticeably coming from Shell Helix Ultra 5W/40. Oil temps are much more stable with SIN 5 he's been telling me.

i used castrol edge 5W30 all the time. in pretty much every car i owned lol

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M35 Stagea.info @ http://www.m35stagea.info/

When I switched from motul 4100 (5w30 semi-synth) to 8100 (10w40 fully synthetic), I noticed an instant improvement in smoothness. Coming from my busted as fuck car, thats saying something!

older engines probably shouldn't use anything below a 10W40 rating. not unless you want to see your expensive oil going out the back in a cloud or pooling on your driveway.


Justin...

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STI - Made in Texas,not Japan.