The engine will be fine. But the catalytic converter in the exhaust system will get plugged up. Usually the sensors get messed up and the engine doesn't run right. The catalytic converter gets extremely hot and can catch on fire.
I don't believe there is a such thing as a leaded fuel engine. All gasoline is unleaded, some just a higher grade.
leaded fuel is economic compared to unleaded because more distance is covered with leaded than unleaded
Unleaded fuel should always be used in a modern engine. Leaded fuel causes a detrimental buildup that will quickly destroy your bike.
Unleaded fuel was introduced in the mid 1980s, it depends what engine it has, if it needs leaded fuel you will need a new engine
unleaded fuel
No, it will mess the engine up
It won't hurt the engine but it will hurt the catalytic converter.
A 1973 Volkswagen (VW) was designed to run on leaded fuel, as unleaded gasoline was not widely available until the 1980s. However, many mechanics recommend using unleaded fuel with an additive to protect the engine, especially since leaded gasoline is no longer commonly available. It's important to check the specific model and engine type, as some may have modifications that allow for unleaded fuel use.
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
Unleaded
You should use unleaded fuel in your 1979 Yamaha XS 1100. While the engine can run on leaded fuel, unleaded is recommended due to its availability and compatibility with modern fuel systems. Additionally, using unleaded fuel helps prevent potential valve seat damage associated with leaded fuels. Always check the owner's manual for specific fuel recommendations.
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