I've used M1 15W-50 in my M3 since new. I now have 65,000 miles on the car. I change the oil every 5,000 miles or once a year. I recently bought a VW R32. I'm using M1 0W-40 in the R32 as it meets VW specs. I'm thinking of changing over to the M1 0W-40 in my '95 M3. Any thoughts on this?
Thanks!
David