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What are the benefits or a Dual Valve Oil Catch Can vs a Single Valve?

Posted by on 12/18/2018 to News
There are many Oil catch cans out there on the market to choose from and a substantial price difference. The statement you get what you pay for does hit the mark when it comes to PCV Oil Catch Cans. Many Oil Catch Cans who are on the lower end of the price bracket are single port cans. This means they have 1 "in" valve or port and 1 "out" valve. With all PCV Oil Catch Cans, the "in" port is always connected to the Positive Crankcase Valve. This is where the dirty air exits the engine and goes into the intake manifold to recirculate back into the engine. Back in the day before air pollution control, these gases were let out into the atmosphere. Routinely, there was a tube that pointed down and that allowed the oily residue to drip out. That is why there used to be a lot of oil on the roads.

Keeping Your Oil Catch Can from Freezing in the Winter Months

Posted by McNally Electronics on 12/18/2018 to News
We often get inquiries on how to keep an Oil Catch Can from freezing. The truth of the matter is there are some cold environments that a can is going to freeze. The contaminants that are filtered out of an oil catch can consist of Oil, Carbon, Acid and Water. Even though most of those elements have a freezing point well below 32 degrees Fahrenheit (0 degrees Celcius) the water component will freeze. Once these elements are caught in the catch can and sit overnight they will start to separate.  If you open the release valve and the can does not empty due to it is frozen you may be able to take a paperclip, a wire, or something of the sort and insert into the bottom valve. This pokes a hole in the "frozen water" portion of the contaminants and allows the can to drain.