Need advice.

I am considering using one for my 2002 626 2.5l. My purpose is just to clean, somewhat improve and prevent. It is a 5.25 oz (155 ml) bottle saying "Upper Cylinder Lubricant with Injector Cleaners". Have you tried it and what was your experience? Did it improve the engine performance and MPG? The substance is oily and doesn't burnt on its own, I tried to fire it with a lighter, it woudn't burm. Is that how it should be? If it is not burning, how would it be burned in the chamber and clean injectors? Or its sole purpose is lubrication?

Read the side of the bottle, I suspect that you'll see something in very small print that indicates that the contents of the Lucas treatments are 100% Snake Oil. Long story short, don't waste your money, the only effect using a treatment such as this is to lighten your bank account.

Nice information