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Old 10-22-2001, 06:04 PM
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Join Date: Aug 2001
Location: seattle, Washington
Posts: 49

I've read through all the old posts about synthetic oils. For the most part people seem to like them. It's about time for an oil change and I was wondering what weight should I use? I live in seattle. If a leak did spring up, could I go back to the old oil and get rid of the leak? Is it possible to do any damage switching the oils like this? I have a 1990 300te with 118,000 miles. Thanks for you help

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Old 10-22-2001, 06:38 PM
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Join Date: Jul 1999
Location: CT, USA
Posts: 2,699
Mobil One 15W50; great oil, and seemingly the least prone of the synthetics to develop or increase leaks.

Good luck, and enjoy your wagon!!
"If everything seems under control, you're simply not going fast enough" --Mario Andretti

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Old 10-23-2001, 03:38 PM
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Join Date: Feb 2000
Location: Canada
Posts: 1,774
I asked my mechanic the same question when I was pondering the conversion and he replied that if I switched back to dino oil right away, the leaking caused by the synthetic oil *should* stop.

When I switched from dino to synthetic in my '89 300E last year, I had no leaks. My brother has a '77 280E and he recently switched as well, with no problems. From what I have heard it is basically a gamble, although the odds seem to be on your side. Good luck!
2007 E550 4Matic - 61,000 Km - Iridium Silver, black leather, Sport package, Premium 2 package
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1998 E430 - sold
1989 300E - 333,000 Km - sold
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