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In Reply to: Oil Change Frequency, 6,000 miles driven per year. posted by EricS on June 10, 2001 at 15:34:50:
Here is what I am doing:
When driving around town on short trips, use as much lower gears as you can bear (after engine warmed up). Change oil every 3 to 4 months. It’s perfectly OK to use multi-grade oil (to lower the cost of oil changes) instead of synthetic as the owner's manual indicates. At least once a month take it to the highway, and keep it on 3rd or 4th gear to maintain the rpm around 4000 to 5000 for 5 min. or so.
I have great success on keeping my older (1980) BMW at top shape since brand new. It is still as good as new, if not better! It’s only got 95,000miles. I am doing the same thing with my Z3, but it’s the 2.5l (not M). Good luck and I invite any criticism.