That's alot of good input.
I run the cars original 1970
oil warning light sender. It doesn't go off until oilpressure is 6 kg's (alot of PSI)! which means that it's on permanently.... Maybe it need to be changed?
Looks like one of those "standard" canton sumps can be easily modifies to fit, then. I'll stick with one of those.
Yes, 10-60 is heavy & sticky. At least the oilpressure is OK at idle and no 0-pressure turns have come up after I started using it. Might switch to 20-50 mineral, though, which is almost as heavy..