Many of you know I've got catch cans on both my pcv valve vacuum line, and on the throttle body to valve cover line. They've been on the car for probably a year and a half/10k miles. During that time the oil has been changed 3 times. I've never noticed any reduction in oil level on the dipstick between changes.
Today for the first time I drained the catch cans. I got a total of about 6-8 oz. of oil out of it. This is on a car that's driven pretty easily, mild h/c/i/exhaust mods (about 275HP crank). The short block has about 65K miles on it.
I suppose I was surprised that it had trapped that much oil. The good news is that it seems to be pretty effective - I wouldn't have guessed that much oil would've accumulated.
Today for the first time I drained the catch cans. I got a total of about 6-8 oz. of oil out of it. This is on a car that's driven pretty easily, mild h/c/i/exhaust mods (about 275HP crank). The short block has about 65K miles on it.
I suppose I was surprised that it had trapped that much oil. The good news is that it seems to be pretty effective - I wouldn't have guessed that much oil would've accumulated.