I just bought an older boat a 68' starcraft and it got me thinking about the switch from leaded to unleaded fuel and I wondered when this took place in marine applications. My boat runs perfectly fine on pump gas but I was just curious when this took place? I'm a younger guy (21) and this was before my time. Im also curious what had to be done to make older engines run on unleaded fuel? I've seen lead additives for cars at auto parts stores and kind of always wondered.
Thanks for helping with my curiosity