Message: looked through throttle body, no pooling oil but very slight signs of a thin coating of oil. it is also clean, like new oil would be from the bottle. Is it normal to have some oil (if that is what it is) on the plenum plate. truck isn't using oil but then again i've never had to check the oil since i bought it cause it never consumed any. i will check every week now but pretty sure it's not consuming.
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Subject: bad plenum signs!