11-11-2011, 08:46 PM
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#12 (permalink)
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Base Member
Join Date: Jan 2009
Location: Detroit, MI
Posts: 73
Drives: 09 G37S 6MT
Rep Power: 18
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Quote:
Originally Posted by MattP725
The oil doesn't go past the piston ring. The air you suck in goes from the throttle body, to the intake manifold, to the top of the block where it mixes with fuel and ignites. You won't see any indication of damage in the oil (unless you blew out a piston/ring which you would def know).
No worries I'm sure you are fine... 300mi isn't really that much to have a small air leak.
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excessive dust from intake leaks can show up in an UOA from what I've read from various sources, one of which is:
High Silicon in Engine Oil Analysis
"Particles of airborne sand and dust vary in size, shape and abrasive properties. In an engine the ingress of atmospheric dust takes place primarily through the air intake. Efficient air filters remove 99% of the dust that an engine ingests. The remaining 1 % consists of very small dust particles that pass through the air filter. These vary between submicron size particles to particles up to well over 10 microns in size. This dust will pass between piston, rings and cylinder and eventually become suspended in the lubricating oil."
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