Smoking filter
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Smoking filter
I noticed this myself about a week ago on my truck. From what i can tell , it is oil vapor that is left over in the intake tube after the truck gets shut off. The pcv gets pressurized by the air going into the turbo , so when the truck shuts off , their is still going to be a small about of "smoke" left in the tube between the filter and the turbo itself , so it is going to look as the airfilter is smoking............