hey all just wondering what everybody's opinion is on best oil recommended for a 03 sti ??

Search is your friend..

http://www.perth-wrx.com/vb/mechanic...endations.html

I use Motul 300v chrono 10w40. It's expensive but up there as a grade 5 synthetic oil. I used it on my Skyline and now I use it on my 06 WRX. You can't go wrong.

Yeh good advice oil threads can get quite heated in debate.....

I am a fan of Penrite products.

The Penrite guide recommends HRP 5 (5W-40) for your car followed by HRP 10 (10W-50) and 10 Tenths 0W-40.

I use the 10 Tenths Racing 10W-40 on my last oil change and have a few bottles of the 10 Tenths 0W-50 (now renamed 0-W40 as they removed the "extra 10" marketing from it) in the garage that I'll use next time.

The best way to get an accurate reading if the oil you are using is good for your car you need a oil pressure gauge and measure the oil pressure at operating temperature, it should be something like 10-15psi at idle (don't quote me on that, you will have to find it in a manual to be sure).

That's something I've been meaning to do for a while now but haven't gotten around to, I was thinking about mounting a oil filled oil pressure gauge under the hood but haven't looked into it any more than just thinking about it.

If you have a prefered brand I'd stick with it over the course of a few oil changes and vary the viscosity depending on your oil pressure readings until you find one you are happy with.

Synthetic or semi synthetic is prefered but if you have a old car that has been running on mineral oil all of its life.

here we go again

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06 sti

Drewgong we all know you use cold pressed organic olive oil.

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[COLOR=Black]Liberty GT Spec B tuned 240 HP & 372 Nm at the hubs.[/COLOR] "Instead of banning high performance cars - ban low performance drivers"

honestly this is the shiznit

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06 sti

Penrith 15w 50 here. Have always used 15/50 in all of my builds from 300bhp to 600bhp.

Used Motul 300v in my race car as it copes with high temps better than any other oil out there.