Mel wrote:
Can an 0-300 last a long time?


Autogas will be your best bet. The O-300 is particularly bad at
scavenging the excess lead in 100LL. Deposits tend to end up on the
valves and sticking is common.

I used to fix about 1 stuck valve per year while burning 100LL in an
O-300. Switched to autogas and the problem disappeared completely.

John Galban=====N4BQ (PA28-180)