TiFJ
Full Access Member
FRF Vendor JDM sells them as well as maybe a couple other vendors here. They are the JLT Oil Separators. I have one on my truck and love it. For those that run the truck hard I would recommend getting one
I agree but even if you don't run the truck hard they are still beneficial IMO. Mine catches more than a little bit of oil even when mostly driving on the highway with the cruise control set.
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Do they just work to filter more sediment out of your oil in addition to the oil filter?
From JLT's website:
During the process of venting crankcase pressure back through your intake track, large amounts of oil, in the form of vapors, can coat your blower rotors, intercooler fins and even dilute your gas, lowering its octane level. This happens on all engines and is even worse when supercharged as crankcase pressures are increased.
To combat this, we have developed an oil separator of our own design. Milled from solid billet aluminum this is a rock solid piece. It has a knurled tank base for easy removal to drain the spent oil and an O ring seal to prevent any leaks. We took this unit a step further and added a metal mesh Filter element. This element collects the vapors allowing them to grow into droplets and drop into the tank.