Quote Originally Posted by sirkosero View Post
I thought that if an engine is built to run on unleaded fuel, valve recession on lpg should not be an issue. Why is it that xoom offers an additive that would prevent valve recession?

Is there really a risk of engine damage because of lpg (aside from those running too lean due to improper tuning)?
Unleaded fuel actually is a fuel that has very minimal lead. It just conforms to a certain market
standard to be called unleaded.