Motorcycle Repair: leaded or unleaded in a 72 honda 125 enduro, honda 125, leaded gas

Question
Hi, I have a 1972 honda 125 enduro. I was wondering if this motorcycle was desinged for leaded or un-leaded gas.

Thank you for your time on such a simple question.

Answer
At the time the bike was made leaded gas was still
in use but was pretty much taken off the market
in 1986 due to it's danger to people's health.
The bike will run okay on unleaded as octane ratings
are comparable to leaded gas. You can use premium gas
if you are worried about pinging or detonation which
can hurt the engine.