special tool

Frank - I get the same exact thing and my leakdown is all 1%.
This is condensation mixed with a little oil that gets sucked up at high revs after it gets beaten to hell by the crankkshaft.

phils87951

The condensation is definetly a possibility. but you would need a lot of it.
If your leak down numbers were good then I would look to the famous "oil cooler" seals.

In the N/A cars the oil cooler is incorporated into the oil filter housing, in the 951's its external BUT the reworked oil filter housing has a sleve and 2 small O rings that keep the oil and water parts seperated as they did not rework the block.
Here is a picture of the sleve and one of the 2 seals, the other is in the block.

OK i tried to upload a picture but it does not seem to show up, how do you put a picture in the thread ???
I can rebuild a 951 engine but I cant seem to be able to post a picture,,, LOL

Frank@Work

Would a crankshaft scraper help?

35thSLP

you would have to be a member to add a picture...

David Floyd

A scraper should help keep oil off the crankshaft, don't know how it would effect the oil being whipped up in the pan.

Frank@Work

This is what I found in my oil catch can:

951Boost

^^^^ Jello chocolate pudding? Sorry man, I know that was in poor taste, I do feel for you.
I'll agree with what others have said, if the compression and leakdown come back ok. I would change the oil cooler & filter housing seals. Yes, a big PITA but if they've never been changed it's just a matter of time before they go anyway.

special tool

Yup - same stuff, and my leakdown and compression numbers could not possibly be any better.

What is your rev limiter set at, Frank????

Frank@Work

@951Boost: My engine was rebuild one and a half year ago! All seals are fresh, but neverteless I will replace them again to be sure.

@Special Tool: I use Guru chips. The rev limiter should be at 7000 rpm, but I think the rev limiter is still set at the stock 6400 rpm.