Darksteel165
Legendary member
He aint worth the breath.Let's ask a few questions about this.
Do oil catch cans work? Absolutely, a good quality catch can will do exactly what it's designed to do and separate the oil/fuel/condensation from the air getting sucked though your PCV valve. This is FACT you an not deny.
Are gasoline engines designed to burn oil/condensation? I would say no, they are designed to burn fuel and air mixture. Hence Air/fuel ratio. Not air/fuel/oil ratio.
Does burning these vapors collected by an oil catch can hurt your engine, if you don't have a catch can? Would depend on what you consider "hurt". Excessive oil getting sucked in through PCB system can lead to excessive deposits and detonation, even on port injected engines. Most modern engines have knock detector prevent damaging detonation, at a cost of performance due to reduced timing. Most people will never drive their vehicles in a manner where this would ever be evident to them.
Do you NEED and oil catch can? Absolutely not. You can get hundreds of thousands of miles out of your engine without one.
Does running an oil catch can help? Yes, although the benefits aren't something the average person will ever notice. And some peoples "reason and logic" for saying they dont work falls into the category of them not noticing a change in performance because it happens so gradually over time.
Do oil catch can cause problems? Absolutely not. Running one can only help your engine. Anyone who says there is a potential for blocking the lines in winter due to freezing of the vacuum lines has a crappy install, or does a lot of short mileage trips not allowing the engine to get up to proper operating temp to burn off condensation.
He doesn't listen to common sense or any kind of reason.
Also lines getting blocked in the winter is not a thing as oil doesn't freeze, and water would drip into the can and not get caught.
Maybe if you lived in Russia or something crazy like that
Also you do notice the benefits of a catch can on SOME car\trucks. For example the 5.3 Ecotech3 engine intakes gets so dirty that your MAF sensor can fail at under 20k miles without a catch can under normal operating conditions (per dealership techs) among other problems that are not the same as a HEMI (which may not give measurable benefits to the uninformed clueless common person who thinks "key turns, truck turns on goes vroom vroom, life is good" like the person you are responding to)