Originally Posted By: XL1200RFan
This slow-drainback characteristic will no doubt cause some overservicing issues by those who go by the dipstick rather than the manual.
I couldn't agree more. I had the same experience a few days ago, in my case with a 2018 Equinox (1.5L turbo). The GM Owner's Manual warns explicitly about very slow drain-down. Does your Chrysler manual warn about this?
I've never seen it this bad either. New engines mostly I guess. We could say its the VVT system, or in some cases the turbo bearing galleys.
I don't know what quick oil change shops will do. They don't have all day for the oil to drain out the plug. So they end up draining out only 80%-90% and then overfilling if they look up and put in the "spec" amount!
As DIYers, we need to only put in 1 quart less than spec, just in case it all didn't drain out while we had it in our own garage. I overfilled mine thinking 10 minutes of draining out the plug was enough. Had to let some out. How long did you let your oil drain out the plug? It sounds like you got it all out, unlike what I did.
If we take our new vehicles in the dealership, I'm going to tell them to put in 1 quart less than full-spec so they don't overfill it. I know they can't drain for 2 hours, so it seems like thats the only way to avoid overfilling.
As a side note, what really complicates 2018 Equinox 1.5L oil changes is the fact that AWD models have 5 quarts, and 2WD ones (same engine!) have 4 quarts, as if all the other issues aren't confusing enough. Weird, man.