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GReddy oil Catch Tank catches the oil and moisture in the blow-by gas that causes carbon and sludge build-up in the EVO intake system and the engine. It keeps the engine clean even under hard driving conditions. It is also an excellent engine dress up item that gives a racecar look. Polished aluminum body with sight glass. With a turbo car, there is more blow by oil which over time will "gunk" your intake with oil and residue.
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