Leaded fuel which has been banned for sale in the U.S. has a lead additive added during the refinery process.
I don't think there is a way to visually tell the difference between leaded and unleaded fuel. However, leaded gasoline has become "extinct" and it is more likely that you have unleaded gasoline in the can.
leaded fuel is economic compared to unleaded because more distance is covered with leaded than unleaded
unleaded fuel
Unleaded
leaded fuel contains lead which damages the engine while unleaded fuel contains negligible amount of lead.... on older engines the lead in the gasoline was to lubricate the valve stems in newer cars they have designed that requirement out
I don't believe there is a such thing as a leaded fuel engine. All gasoline is unleaded, some just a higher grade.
the 69 used leaded fuel, you can get the heads redone and have hardened valve seats installed and you can use unleaded with no problem.
Unleaded fuel should always be used in a modern engine. Leaded fuel causes a detrimental buildup that will quickly destroy your bike.
Niether its diesel
leaded gas has lead in it, unleaded does not Leaded petrol (or gas as you Americans quaintly call it) contained a chemical called Lead Tetraethyl to improve its performance. It was then discovered that the amount of lead given out by cars (or automobiles) was making city air dangerous to breathe and so its use has been forbidden. All petrol/gas is now unleaded and "green". Car engines have needed to be redesigned to allow them to burn the unleaded fuel.
a leaded engine requires you use gasoline with a lead additive which helps stop knocks and pings but is very hard on the environment, but on the plus side the leaded fuel would actually lubricate your valves and other fuel system components like the floats in the carburetter a non leaded uses fuel with different types of additives which believe it or not still contains a small amount of lead
try a mixture of half leaded and half turpentine substitute i used to use leaded, but then decided to give unleaded a shot, works better for me, and had the engine checked.. No damage