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Every internal combustion engine has pressure and blow-by gases in the crankcase and valve cover. Some engines do a better job of separating the oil vapors before reaching the PCV(positive crankcase ventilation) vents than others. Most engines don’t,sending a nasty mix of oil vapor and waste gases out the PCV vent and into the intake system. These vapors smother important (and costly)sensors with oil and gunk. In extreme cases, this gunk can build up on the valves killing performance. On a micro level, oil vapors displace oxygen molecules altering air-fuel ratios and effectively lower the octane level of your fuel.

The concept is simple – trap the oil vapors in the PCV system before they have the opportunity to reach the air intake. It takes more than an empty can and some tubing to achieve this task. From the start, our oil catch cans are designed to pick up where others leave off. Our inlet and outlet fittings are made from ¾” tubing, the same basic size as the OEM PCV fittings and hoses. Larger inlet and outlet fittings allow for uninterrupted flow from the PCV vent to the can and back. Tubing smaller than stock will restrict the PCV vent and the flow of vapors. As PCV gases enter our catch can they disperse and turn upwards, forced to flow through a series of four filter screens. As the gases flow through these screens, heavy oil and gunk sticks and lighter gases reach the outlet tube at the top. Accumulated oil and gunk naturally runs off the filter screens and collect at the bottom ofthe tank. Without these screens, only a fraction of the liquids are trapped by the catch can. A bottom drain allows the tank to be drained without removing the entire catch can. In order for an engine part to be considered stealth, it has to work well without giving up it's purpose to curious eyes. The stealth oil catch can does exactly that.  Essentially a stripped-down and smoothed version of our ultimate can, the stealth can offers the same internal design without the bells and whistles.

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