Well, I'm installing an oil separator in my PCV line. I got it from home depot and it is the same as what Steeda sells (and I got it for $12, as compared to $60 from Steeda). It didn't come with any fittings. Is it OK to use PVC plastic fittings? What about Brass? I just don't want any issues with material incompatabitily.

Thanks,

jk

 

Hmmm, not too sure about using PVC. If I had a choice I'd go with brass fittings.......or any kind of metal. Better to be safe than sorry.

 

I would not use PVC.

PVC has decent resistance vs. oil, but you can't be too careful. Keep in mind that in plumbing applications you use a petroleum solvent glue to dissolve the PVC to make fusion joints. I would be worried that over time the PVC could deteriorate due to exposure to oil, gas, or other chemicals.

Also, PVC has a relativley low maximum service temperature. That's the same reason why it's not used for hot water pipes in houses. It gets soft above about 180 degrees F. That is not a good safety margin for use under the hood of a car.

Metal is going to be the optimum choice. If you can't get metal, then get a plastic with better heat and chemical resistance, such as Nylon 6 or a flouropolymer like PTFE.

 

Thanks for the replies! Metal it is. Probably brass.