Re-powering 1972 SeaCraft 23'...F300?

[FishStretcher]

I don't know about the e-tec, but in normal 2 strokes the oil goes where the fuel is. Which breezes by some bearings.

In 4 strokes that dirty old oil goes to bearings and bearing surfaces like cam lobes, piston skirts, wrist pins, etc.

If it was a terrible idea, then 4 strokes wouldn't last hundreds of thousands or even a million miles.

The roots "supercharged" two strokes last a while, too. But those are also a different beast. YMMV. Literally.

So it might not be THAT cut and dried.