JLT Performance Oil Separator 2020 Ford Mustang GT500During the process of venting crankcase pressure back through your intake track, large amounts of oilin the form of vaporssurface in your intake tube and intake manifold runners. These vapors can even dilute your gas, lowering its octane level. This happens on all engines and is even worse with forced induction vehicles (supercharged and turbocharged) as crankcase pressures are increased. To combat this, JLT Performance has developed an oil separator