NvrFinished
Well-Known Member
Yeah, I have the UPR can on my car. You are correct about it catching water. I believe it's due to how far the can is placed from the engine (up front by radiator). It doesn't warm up very fast and will cause moisture in the warm vapors to condense when it hits the can. I called UPR about this and they agreed.I'd NOT recommend using UPR's catch cans. They trap a lot of moisture which doesn't affect fuel octane, not the normal amounts the crank case sees that gets into the intake. So they tend to fill up rather fast and 70% of it is water which we don't care about. JLT's 3.0 catch can is a good option as is the Ford Performance offering. They both do a good job at trapping oil vapors without trapping lots of moisture. Mishimoto's is also promising and has an anti-slosh baffle.
However, the can is deep and holds a lot of fluid. Also, I noted that it tends to do this more during daily driving in the cooler months. The engine temps take a while to warm the can in the bay during these periods.
I do a lot of HPDE's. When I change my oil before a driving event and empty the can, it never has water in it when I check it after the event. The engine warms the can up much faster and any moisture present in the vapors do not condense.
Would I consider a different oil catch can next time? Yep... but so far this one is working well for what I use it for. I've yet to see it get more then 1/4 full between oil changes.
FYI, you produce some good posts with solid info.
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