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Originally Posted by
Lawineer
Man, talk about overkill. The amount of oil that comes out after even 30 min (if you want to be ultra safe) vs 30 hours is pretty much negligible and non-compounding. That's a lot of work for an oil change.
You could let it drain for 15 min or 15 years. If you put 11 quarts back in, you'll only have added 11 quarts. If you're really OCD, just jack the other side of the car up a touch higher.
Just for fun, next time you change your oil, remove the pan after 30 min and put beaker or something underneath. See how much oil comes out. I bet it's less than half an oz.
Assuming he uses a new oil filter and he uses a total of 11 quarts (whether it's all in the engine or part of it into the filter and some into the engine), he's going to have 11 quarts in the engine no matter what.
It's an oil change guys. Don't over think it. I just take off the filter and draincock, fill up a bottle for oil analysis, get out from under the car, wash my hands/take off my gloves, get the oil, filter and funnel down from the shelf and lined up, pop the hood, fill the filter with oil, etc, maybe go get a drink of water, come back down and within those 15 min, it's done draining. I put the new filter on, put the draincock back in, low the car, then fill it with the correct amount, check the level, and be on my way.
**except last time. Last time I added a trip to autozone and three hours of cleaning oil out of my garage because I didn't realize I forgot to open the drain pan breather valve and I had about 5 quarts of oil from the daily driver to clean up by the time I heard the bubbling. JFC, what a disaster. The best part was that I couldn't get the draincock back in to fill the engine back up without laying in the oil under the car.
It was also my first oil change, and I discovered the previous oil change monkey lost the gasket for the oil canister solved the problem not by getting a new gasket, but by torquing the fucking oil filter cap down so tight, my impact couldn't take it off and I had to use a long wrench + a mallet. All while laying in used engine oil.
My neighbor-buddy who is also a car guy found it very entertaining.
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