Oil wieght for turbo motors

[mrnickleye]

Originally Posted by Caliturbo88

so 10w40 isnt too thin for the turbo? Im thinking next oil change run 10w40 synthetic. as long as synthetic is ok for a turbo.

10w-40 should be just right for your car. I see you are in sunny s. cal., where temps stay up above freezing, and hardly ever get over 95*.

Amsoil makes a GREAT product, and will serve you well. I know many people that have run it for years, and swear by it.

I run their gear oil in my diff.

It seems to be commonly known that putting syn oil in an engine with high mileage (like 100k+) can start to leak oil.

It appears the syn oil cleans away the varnish and sludge that builds up around seals(crank, rear main, cam, etc), which has been helping those old seals to keep sealing (with continued dino oil usage).

I'd say, if you start to see some leaking develop, replace the offending seal(s). (a good thing) And see if you can keep using the syn oil. BUT ... "Feeding" a leaking motor with syn oil can get expensive.

On my JDM motor with approx. 100k miles, I use dino oil and change it every 2-3k miles. I don't a drop of oil leaking.