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AlfonsoR AlfonsoR is offline
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Join Date: Apr 2010
Location: Houston, Tx
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Originally Posted by bpu699 View Post
You car has almost 200k miles...

You didn't just put synthetic oil in, did you?

I had a 76 911s with 140k on it, never smoked. I decided to "improve" it with 20/50 synthetic... started smoking at idle like crazy. Changed back to 20/50 dino, it got better, but never the same. I suspected it would take a while for the sythetic to "burn off."

Might be grasping for straws here, but put in some castrol 20/50 gtx and see what happens...

I have synthetic in my 205k miles BMW 635 and I have synthetic in my 100k mile 911 and have absolutely no issues. You might expect a little bit of difference if everything is in good working order, but that's it. You should not get clouds of billowing smoke just from going dino to synthetic.

And PLEASE do not use Castrol 20W50. Brad Penn 20w50 is the recommended dino oil. There are other options as well that can be found in the ultimate oil thread on this forum.
Old 07-09-2010, 09:51 AM
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