Ford 350 lost 1/2 it's oil and no apparent leak on ground under. Where did it go

Ford 350 lost 1/2 it's oil and no apparent leak on ground under. Where did it go:?

If there's no apparent leak I would tell yo to check several things, you don't mention a year also Ford didn't make a 350 but a 351. Sounds like it is burning oil or you haven't checked the oil in a long time. You may also want to check if the oil smells like gas if it does and you have a mechanical fuel pump the diaphragm may have ruptured and is leaking into the crankcase diluting the oil allowing it to blow out the tailpipe

Oils with poor volatility rating will evaporate the "light" ends.
Other possible issues, but even in an otherwise sound engine, this happens. In such a case, a good Amsoil product won't do that.

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