OIL:)

[20vWill]

Clean oil is more important than how slippy it is.

You are better off using mineral & changing the oil every 3,000 miles with a top quality filter, than running a synthetic for extended periods.

Changing synthetic & filter every 3k is VERY expensive.

I use Castrol GTX 10W40 in the 20v and the 16v 4AGE. I get it cheap and it's a decent quality and the right grade for the engine and ambient temps.

It's wise to keep the oil temperatures down (eg around 90 deg C) to prevent the molecular breakdown of the oil. Higher temperatures in forced induction engines often require expensive synthetics, but for NA 4AGE's, quality minerals are fine.

The same goes for LSD oil - you may as well just use a decent mineral LSD oil and change it regularly. Regular changes with synthetic becomes soooo expensive.

The amount of sludge that can be generated in an LSD is frightening. Leaving synthetic in for a year is just too long and the contaminants will damage the LSD. If you do a lot of drifting, you will need to change the oil every 3 months at least. I do mine every month.