WTF is this..

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1badjk

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This mocha colored substance is what I drained from my catch can today. It smells like oil but looks like mocha Frappuccino! I am running a fully synthetic oil, could that have something to do with the look?

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Ruger

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It is popularly known as "******," and it's a normal byproduct of the crankcase of an internal combustion engine.

oil fumes + water vapor = ******
 

zemuron99

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Just completed a ~2900 mile road trip from Seattle to Vegas, back through Death Valley and central Oregon over about a week. Averaged just under 18 MPG, including some stretches along US93 where I was able to let Venture (ya, I named my Raptor) stretch her wings for good long stretches. Didn't appear to use a measurable amount of oil based on the dipstick level, but I did find this in my just-installed JLT catch can. Not a huuuge amount, but still happy that that gunk isn't cycling through the intake side. Probably between 1 and 2 tablespoonsful Thank YOU JLT!. The last two pics are about 2/3 way thru the trip, haven't taken any from the end just yet.

My ONLY advice is...do NOT over-tighten the can on the mount. Depending on how you route the doses it may be difficult to get it off if you over-tighten it. I had to de-mount mint today to get the collector off. Put a drop of light machine oil on the threads to help, and just barely got it snug. Will check it from time to time to ensure it stays well fitted, but don't want to have to disconnect everything each time I want to empty it, though it's only a 5 minute job to do so.

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