What an emotional Week!

(My check engine light is on too, so I can relate...)

What does a gasoline’s volatility mean to me?
Volatility is the rate at which gasoline vaporizes at a given temperature. The volatility of a gasoline is important because the liquid gasoline must be mixed with air and vaporized in order to burn in the engine. Liquid gasoline will not burn.

The volatility characteristics of our gasolines are important to your driving performance. Gasoline with high volatility vaporizes more readily than one with low volatility. In hot weather, gasoline that is too volatile can cause vapor lock and stalling in your vehicle. In cold weather, a gasoline that is not volatile enough may cause hard starting and poor warm-up. In the winter months, for example, your vehicle's engine is extremely cold before startup, and the gasoline must have a high enough volatility to be able to vaporize easily in a cold engine environment. Our gasoline’s volatility is carefully balanced on a seasonal and geographic basis, to provide the correct vaporization characteristics to ensure proper operation in your vehicle.

http://www.exxon.com/USA-English/GFM/Products_Services/Fuels/Gasoline_FAQ.asp

Keep on keeping on, LittleK.

Quote:

(My check engine light is on too, so I can relate...)

Those are programmed at the factory to come on whenever the dealerships service department is running slow.

Marty - that's what I thought! If he forgoes stents now, will open heart surgery be more likely later?