I need that shit at home...that sounds glorious

I remember that we used to have a 2 stoke mower 30 years ago. Things might have changed. Or its a regional difference. Anyways, at least I was right about the engine type.

Instructions clear. Jacking off my truck...

Well, there's your problem. Leaves make terrible brakes!

"Sitting there"? You don't have anything to do for 15 minutes? Even if I was (more) paranoid and didn't want to leave my vehicle unattended for that time, I could be productive on my phone for 15-30 minutes...

Sounds like you have the oil stains to prove it's a working strategy.

Might be overkill but I started jacking my truck up on the left side because my drain plug is on the right side of the engine block. Started doing it because the last little but always ended up in my skid plate and I would leave a trail in my driveway after every oil change. But I noticed it drips for much longer when the oil pan is tilted towards the plug.

It was the cleanest oil change I’ve ever seen. I can’t even remember where he attached the vacuum to, but it had a tube with threading that fit an oil jug and then attached to a shopvac down the line, and it just sucked the oil out into the old container and then he capped the container and that was that. I was gobsmacked

TIL as well. I've never seen or heard of a vacuum setup for oil changes. Other fluids? Absolutely, but not oil. To be fair, I've also been out of the industry for about a decade now so some shops may very well be introducing it, just none that I've personally seen yet. Neat either way!

I guess it depends on the car. My old Leaf definitely doesn't.

Yeah if you're really that concerned about leftover old oil you'd be better off flushing the system by doing a 2nd oil change a few dozen or couple hundred miles later rather than sitting there waiting for it to drip out.

I'd say the drips in comparison to the amount poured back in is negatable.

You are going to have trapped oil in flat areas anyway, that will all get mixed back together. The filter should be filtering, and then it doesn't matter.

Best to change oil after engine is warmed so that the oil flows out easy.

Isn't there some kind of sensor that would be able to detect even the slightest chamnge in pressure as an early warning?

As a reminder, EVs don't require oil changes. That makes it easy to forget brake fluid which is still very much a thing.

Drippage doesn't matter because of how much of the old oil sticks around in the engine anyway.
Change it, change filter, zip it back together, drive off

Sure, filters extend the life of oil, but they do that by using a porous filter media. The larger particulates get stuck in the filter media, and the cleaner oil exits the filter...until all the microscopic holes get filled with particulate matter. Once the filter media is clogged, one of two things happens:

• on cheap and horrible filters, oil goes into the filter...and never comes out. The engine runs dry, heat increases, and you spin a crankshaft bearing or blow a head gasket from the heat generated by increased friction. Engine dead.
• on a good filter, the increased oil pressure from the clogged media forces open a bypass valve in the filter so oil (dirty unfiltered oil) goes straight through back into the engine. The concept being "dirty oil is better than no oil at all". However this means that the filter is now completely bypassed and the engine oil will continue to accumulate dirt and matter eventually clogging fine oil galleries and causing localized engine starvation of oil, spun bearings, increased heat, etc. Eventually, dead engine.

Oil filters aren't an infinite life extension for oil. They help certainly, but this help is built into the maintenance schedule for changing your oil. Unless specifically noted by your manufacturer don't assume you can change just the filter and your old oil is fine.

They absolutely do not do this and I have no idea why anyone would think they do. It would be utterly ineffective because the oil fill tube goes directly to the sump.

Good lord, the silly things I'm reading in this thread...

Oil filters are a thing, eh.

Despite this being a hot engine it took 15 minutes and was still dripping. I probably need to dump the new oil and replace it to clear out any sludge from this overdue oil change.

Plus, as we all know, it isn't standard on BMWs, Mercedes, etc. 🤷🏼‍♂️

Cool thanks

I’ve never had anything drip more than 5 or 6 minutes and between my 3 vehicles and racing vehicles I did probably 10 oil changes last year 🤷.

Regular black stone tests have never turned up any sort of issues.

This isn’t something you actually need to worry about.

If you're mixing oil and fuel like in a 2-Stroke then there is no oil to change. This is found in smaller things like chainsaws and weed eaters. Not in mowers. If there's a separate oil reservoir that oil needs to be changed out. Because in that case it's not mixed with the fuel.

Shouldn't that be a matter of the engine type? i remember learning decades ago that 2-stoke engines lubricate through the oil added to the fuel and most lawn mowers are typical 2stoke engines, right?

It will definitely help. But commercial places pinching their bottom line aren't going to "waste" oil like that.