If I had to guess. I bet 20 per cent of people check their oil. I never see anyone checking their oil at gas stations. How many people have level driveways?
I'm not sure if they allow less oil to remain with the new pan, or none at all. One benefit is the pickup tube remains submerged and primed with the old design.
The sump allows for adding a full 7 quarts in the 3.0 even with the remaining oil left in the pan.
That's interesting about the oil splatter, makes sense though the thinner it is as it doesn't have the body as such to it that helps slow the flow slightly and also holds itself together better for a lack of a proper term. I've never handled 0W20 yet to experience what its like. I probably had asked this before but have you been cutting your filters open to see what shows up within the filter media. Certainly to begin with no doubt there would be a bit of something show up on that initial filter but after that there shouldn't be much, that is unless the thrust washer takes a dump and the crank shifts from end to end as that would show up as quite the spectacle in the filter.
The sad fact is that some of these oil pans and it certainly makes no sense to me, that in the case of the GM 6.6 Duramax and the 3.0 Duramax as a couple of examples, neither of those pans are designed with as good of complete drain then they could have made them with by a fair margin. So getting every other oil change done by a sucking method that may not be quite perfection, its a far cry better than not changing the oil at all at that interval and having it done only every 10000 miles. And at Valvoline they never touch the drain plug by that method so one less thing to screw up is never a bad thing. Your watching and paying attention and making sure they fill the engine with oil and no doubt noting if there was ever any oil leaking at home for reasons of a leaky plug gasket or the filter not snugged up enough. I can just imagine how horrible ( way extended ) the average north american vehicle does get its oil changed in this current era and the amount of engines that run low on oil because of becoming leakers or burners and the owners having zero clue as they don't check the oil, after all they need that money for fancy coffees, doing their hair and nails etc ( ok maybe that is a San Fran exclusive on some of that 🤣 )
I'm also under the understanding that one should only extract when absolutely necessary. Otherwise, warm/hot drain and let gravity do the rest.
Speaking of which, I did a change at 3k on my 3.0 last night (500, 1500, and now 3k). The one downside to 0w20 is that it drains like water when hot and less like oil. Lots of splatter you wouldn't normally have with heavier weights. It kind of made a mess, actually.
No metal, so maybe there's hope for this little 3.0 yet...
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