mini dirt bike?

[ballin]

i have a mini dirt bike if i put the highest expensivest gas in it will the engine get wreked because my friend said normal gas has lead in it and expensive gas has no lead in it but the mini dirt bike needs lead is that trueif i put expensive gas in my engin it will get wrecked.





and one more question i have a different that mormal size spark plug in my bike will anything happen

 

[ETANATE]

First, All gasoline from a gas station is unleaded. Lead is now illegal to put in fuel. Second, a spark plug is inexspensive and very important. I would recomend getting the correct one. Good luck!