What is a vent oil separator?
As your vehicle burns fuel and creates exhaust, the gasses it produces have to go somewhere. If not properly ventilated, the gasses could pass into the engine’s crankcase, which can create pressure that can blow seals, gaskets, or other essential engine parts.
So, your engine needs a crankcase ventilation system, and this is where you will find your positive crankcase ventilation valve and vent oil separator. The vent oil separator is usually located near the engine valve cover, and its job is to collect escaped oil droplets so that oil doesn’t enter the combustion chamber. The gasses will then be re-burned and eventually pass through your car’s muffler and out the tailpipe for emissions control, giving your engine a breather from harmful vapors.
When should I replace the vent oil separator on my car?
If you notice these warning signs with your vehicle, it may be time to replace your vent oil separator:
Engine oil in the PCV valve
Increased oil consumption
White or blue smoke from the exhaust
Dirt, moisture, or oil under the oil cap
How often should a vent oil separator be replaced?
You won’t see a vent oil separator replacement listed next to an oil change when it comes to regularly scheduled maintenance—there is no set mileage or time limit. Instead, you should look out for signs of a faulty vent oil separator and replace it when necessary.
Can I replace my vent oil separator myself?
It is possible to replace a vent oil separator at home if you’re confident in your car repair skills, but take care to closely follow the steps to avoid mistakes that could lead to more expensive repairs. Most drivers should contact a professional to handle a vent oil separator replacement.