PeachParts Mercedes-Benz Forum - 37,000 miles oil change interval

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Thanks Tom.

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Don't you just love it when a simple thing fixes some persistent problem ? .

yep, especially on this one

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Originally Posted by vwnate1 (Post 4271894)

Don't you just love it when a simple thing fixes some persistent problem ? .

I'm slowly working my way through re jetting a carby on an emissions controlled (California spec.) 1984 Honda Moto ~ it's been kicking my butt for a long time now, I fin ally got my son the racer to listen to it and he said "make the pilot jet larger" and Lo ! it now is close to done .

Cool!

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Originally Posted by Autoputzer (Post 4265850)

Back in the early-2000's, BMW was claiming 20k-mile oil change intervals (OCI's) were sufficient. That didn't end well. Now, they're at 10k miles. My 2002 M3 calculated OCI's based on the fuel burned: When X liters of fuel has been burned, it's time for an oil change. My M3 wanted an oil change at around 13k to 13.5k miles. I did mine at 6.5k miles. I'd get every other one for free with BMW's free maintenance.

I've done 8k-mile OCI's with synthetic oil on a V6 Honda, a Chevy Cobalt, and now two turbocharged BMW's. Looking down the oil fill holes, the engines are spotless. The plastic timing chain guides turn from white to brown, but that's the plastic absorbing oil, not the oil leaving deposits. This will cost me about $300 (three oil changes) more than 10k-mile oil changes over 100k mile. But, I know the engine will be clean.

Varnish (brown coating) on the valve cover and stationary parts visible down the oil fill hole doesn't really hurt. But, if there's varnish there, you have to worry about what's lurking on the pistons and piston rings.

About 55% of new BMW's (and M-B's) put on the road in the US are leased, usually for three years. I suspect most of those lessees never open the hood. If they get a low-oil or low-coolant warning message, they take the car in for free maintenance.

There was a woman on a BMW board who had her leased BMW towed into the dealership because she got a low-coolant warning. It never occurred to her to open the hood and add some water to the coolant tank. A lot of BMW lessees bring their car to the dealership when they get a low tire pressure message, too.

BMW's now have two coolant circuits, one for the engine, one for the intercooler and turbocharger.

It was 15k mile intervalsas I recall for my 2 e46.

And I did take my car to the dealer for air…

After going to 3 gas stations in Oakland and finding defective air pumps, I just turned the buggy around and gave up on going to work on time.

Pulled up, gave them the keys and went to the sales floor, grabbed a coffee, thumbed an architect magazine, ate a cookie.

Later that day I otprdered a portable air pump from Amazon.

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Originally Posted by engatwork (Post 4266365)

If you are going to own a BMW this is a good idea - get rid of it after 100k miles. That way you won't run into reliability issues.

Water pump preventative maintenance install, 1 set of plugs, 2 sets of pads and rotors, a fuel pump. A few pixels on the Nav screen died.
It started burning oil at 200k.

http://www.peachparts.com/shopforum/...1&d=1683180755

It's hard to argue your results Paul ;

The thing with extended oil changes is : by the time the bill comes due most vehicles have been sold to an unsuspecting next owner in line .

These days folks are keeping their vehicles -much- longer so 200,000 miles isn't the big thing it once was .