Anybody pressurized crankcase for oil changes?

[wakejunky]

I've done a number of oil changes using a variety of methods, sucked it out the dipstick with an vacuum oil changer, sucked it out the oil change drain tube, sucked it out manually with a hand vacuum and then the good old fashion way of just letting it drip out the oil drain tube.
I don't currently have access to a fancy vacuum oil changer and the drip out the oil drain tube is slow and doesn't allow all the oil to drain.

Has anybody pressurized the crankcase via the oil filler and had the oil "pushed" out the drain tube? or is it adviseable?
Seems like as long as I wasn't putting in more than 10 or 15 psi I wouldn't think I could do any damage to valves and/or gaskets.

Any technical mechanics out there?

Chris

[Mikeski]

Hi Chris,

I wouldn't do it. You are likely to push oil to places where it doesn't belong like up through the distributor? If it was this easy I think it would be common practice. Too bad I threw away the motor I pulled out of my truck, we could have tried it on that...

Mike