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billjam billjam is offline
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Join Date: Aug 2007
Location: Perth, Western Australia
Posts: 2,001
I cut my oil filter in half to see what was in there. Keep in mind that this engine was absolutely spotless inside when it was assembled. Even the turbo was stripped and thoroughly cleaned. There is no way this stuff came from anywhere other than the turbo.

As you can see, the filter was full of little bits of coke in every fold.
There was also a reasonable amount of soft tar-like lumps in there. I guess these lumps hadn't got hot enough to go rock hard before they were washed out of the turbo.

I haven't yet checked the oil lines for restrictions - maybe one night this week.

I will raise this problem with Shell to see what they say.

1988 Carrera - 3.6 engine (with ITBs, COPs, MS3X) and a whole set of turbo body panels waiting in the attic.
Day job ...
Memories: '68 912, '72 911T, '80 911SC, '84 911, '85 930, '86 930, '87 911
Old 02-22-2009, 02:41 AM
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