I do not know. I didn’t think about it that much, just drove it to the mechanic. I did pull the dip stick, and it didn’t look like a milkshake. It may have looked overfilled, but, I didn’t wipe down the stick either since I was more looking at the color and opacity.
There MAY have been some residue on the oil cap, looked more reddish/brown (coolant is the red variety) and baked on than milky goo. Looked more like oil kicked up oil to me. I did NOT notice any white smoke, certainly no “gas cloud”. I’ve lost my Volvo 940 this way, and I know what that’s like.
I know it does not take much water in this engine to get it to cut out. A common problem is that without an improved cowling rain water can seep into the intake manifold gasket and cause it to cut out that way. You don’t need a catastrophic gasket failure to cause a temporary hydrolock at idle.
Aside from cutting out and not immediately starting back up yesterday, it’d been running fine. A little bit of a tick which it always had. Never leaked coolant and had a couple mechanics look at it in the last month.