I would only run 15w-40 if weather allowed, my brother and I run 5W-40 in the diesels and 0W-40 is the gasser.

My brother also runs Liqui Moly M0S2 in the crankcase, Liqui Moly 75w-90 synthetic in the diff along with their M0S2 formulized for gear oil as well. For all of our cars.

I b**ch at my brother and make him change transmission fluid, gear oil every, power steering fluid, every 30k. So far the E320 and E300 still runs GREAT.

Also I change brake fluid once a year, i know it's overboard but it makes me warm and fuzzy.

__________________
1998 Ford Escort ZX2 5 speed - 279,000 miles My Daily

1992 Mercedes 300D 2.5 202,000 - Pure junk
2000 Mercedes E320 Black - 136,000 miles - Needs repair

Don't forget to grease the screw and threads on the spring compressor.