The 4B11 in the Evolution X is a high horsepower turbocharged
engine and runs a significant amount of piston-to-wall clearance. The
cylinder pressure from the forced air creates more heat in turbocharged applications when compared to non-turbocharged engines, thus the "World Engine" was designed as a "loose" engine for added safety and longevity purposes. Unfortunately, a byproduct of an engine that allows a lot of blow-by is oil residue makes its way past the PCV system and ends up in the intake manifold, and many other places. This oil residue eventually enters the combustion chamber and will lead to lower overall fuel octane which can significantly affect how your engine runs. We have been using an oil separation solution for over 7 years that actually separates the oil from the air flowing between the PCV and intake manifold. It sounds easy enough, as many people have tried to adapt simple catch cans and industrial water valves to remove the oil from the air. Those products do work OK but only separate a small amount with respect to how much oil is actually passing through the system. Enter the AGP Oil Accumulator. Our three chamber oil separator gathers the airborne oil particles through the middle chamber. Oil is separated from the air through the filtering media and drains through a perforated aluminum plate on the bottom side of the middle chamber then accumulating in the bottom chamber. As this oil is filtered through the middle chamber, clean air is then filtered again and exits through the top chamber. This three chamber system design provides the best protection against unwanted oil making its way to the combustion process. The bottom of the Oil Accumulator has a threaded -4 bung and an ORB plug to allow the user an easy way to drain the oil. The Oil Accumulator is completely constructed of aluminum and comes with a standard brushed aluminum finish. To provide some extra 'bling' to your engine bay, we also offer this polished or powdercoated finishes. This fits the Evolution X perfectly and comes with hose and hose clamps for an easy installation.