Radiator sprung a leak, car overheated, is now burning oil. What do?

Never saw any steam from under the hood. It's funny, they can have it beep endlessly just because you have the door open with the key in, but your engine temp through the roof? Silent. No alert. That said I didn't notice the gauge being abnormal until after I noticed it was burning oil, so I don't even know.

>>28457141 (OP)
switch to conventional, probably want to not run a cat anymore if you have that option so you don't clog it