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Posted: Tue Jul 22, 2008 7:22 pm
by Steampunk
If you're not already using it, switch to Castrol lubricants. Either Magnatec or Edge, as I have found that Castrol has been the best at minimising this.
I also chuck in some Uniglide at every oil change, but that stuff is both dear and hard to find.
Posted: Tue Jul 22, 2008 8:22 pm
by SuperMazdaKart
maybe try a diesel oil (they work harder to clean the engine) for a while, something like a 15w40 i think (closest weight to a usual oil weight for our cars). just don't thrash your car while on it though.
Posted: Tue Jul 22, 2008 11:35 pm
by green_comet
I find running a thinner oil to be alot quieter.. I also oil flush, and add lifter free at each oil change.
You could try this stuff, I have head nothing but good things about it..
http://rspeed.net/product_info.php?cPath=1_25_29&products_id=3047
Posted: Wed Jul 23, 2008 5:39 pm
by manga_blue
The right oil usually sorts it. At 136k I'd go for something which is thin cold, like 0W or 5W, so it will pump up to the lifters quickly. Then look for average thickness hot, like 30 or 40, for normal lubrication. Anything heavier than that is just adding frictional losses to an NA8 for no benefits.
Full synthetics have better cold properties than mineral oils. Castrol Edge 5W30 is a good choice at $30 - $40. Mobil 0W40 would be OK too if it wasn't so bloody expensive. There are other full synthetics about in those grades too - just shop by price (Castrol Gernan, Royal Purple, Redline, ...).
The major cost component of Magnatec is marketing, not oil quality.