Well I've always held to the 5k ish range. That said once I hit 5k whenever I get the chance I get the oil changed. That's been for all of the cars to date. I've only have the 500sl 500 miles or so.

That said to 450sl4me, the other side of the equation is time, I would never go less than 2 changes a year. The additives, not so much the oil, will breakdown once heated up and exposed to air.

That's a real problem with my main wheels, at < 2 mi / day to work it doesn't get many miles. But it still gets oils changes. ANd mufflers !!!!

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KLK, MCSE

1990 500SL

I was always taught to respect my elders.
I don't have to respect too many people anymore.