DieselFumes
Veteran Member
Has anyone added a drain plug to their intercooler to drain any pooled oil? I haven't pulled my intercooler to see how much oil I might have after 60k miles but I thought when I do I might look into adding a drain plug.
Its not a stupid question at all...The inter-cooler is built like a small radiator. This unit takes the charge-air from the turbo (air which becomes heated as a result of being compressed) as the charge air passes through the inter-cooler it becomes cooled. As the charge-air becomes cooler it also becomes denser. This cooling process delivers more air into the combustion chamber. More air = more power....more power= more fun...more fun=Hope this doesn't sound too stupid, but just what does the intercooler do and why would it contain engine oil?
The CCV vent from the crank-case to the air inlet is at a connection point after the engine air filter and BEFOR the turbo. As the intake air leaves the engine air filter the CCV vapors (along with the air from the filter) are drawn from the engine and into the turbo. The filtered air and the CCV vavor are then run through the turbo (compressed) then this "charge-air is routed to the inter-cooler to be cooled. It is here that the heated air/CCV vapors are cooled. The oily vapors coalesce and form a pool of oil at the bottom of the inter-cooler.Herm:
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If the CCV has a tube running to the EGR, how does this oil get into the intercooler? Also, I have installed a provent on my PD. Will this eliminate the oil in the intercooler?