VP and Sunoco

[Dan Fahey]

Originally Posted by Ed Wright

I have had trouble with Sunoco failing fuel check. All out of the same 5 gallon can I bought from Sunoco at the track that weekend. Pass one time, failed next pass.
VP C11 has always passed for me.

What causes fuel to Pass one day and the next Fail ?

[Hacksaw]

Originally Posted by Dan Fahey

What causes fuel to Pass one day and the next Fail ?

Mystery question. How about: overheating, not in a sealed container, contact with direct sunlight or the guy checking the sample.

[Dissident]

A change in the dielectric constant check will bounce you. Ask the folks in fuel check....they will offer suggestions. IF fuel has set for some time and evaporated some of the "light ends" of the hydrocarbons will definitely change the dielectric constant. This is not a "he said, she said, they said" kind of deal......

Regards to All that might like this kind of stuff,
HB2

[Rich Biebel]

I’ve seen cars with a valve on the fuel cell vent.
Close it when the car is parked overnight to slow the evaporation process.
Open your trailer with the car in there after sitting a while with an open fuel cell vent and certain fuels and you immediately smell the fuel.

C-11 in particular really very noticeable when I ran it.

[Ed Wright]

Originally Posted by Dan Fahey

What causes fuel to Pass one day and the next Fail ?

I keep the cans sealed, keep them in the shade. I have taken two new cans to Fuel check, had one pass, one did not. This was when Sunoco first showed up. May be more consistent now. Been looking after my wife the last two years. Have not been able to race. Not sure I wil ever be able to come back.

[cmracing]

Originally Posted by Ed Wright

I keep the cans sealed, keep them in the shade. I have taken two new cans to Fuel check, had one pass, one did not. This was when Sunoco first showed up. May be more consistent now. Been looking after my wife the last two years. Have not been able to race. Not sure I wil ever be able to come back.

Sorry to hear that, never easy dealing with a sick family member, surely a reality check on what is important in life. Best of luck to the two of you!

[Ed Wright]

Originally Posted by Dan Fahey

What causes fuel to Pass one day and the next Fail ?

It evidently just barely passed, then barely failed. Maybe it's beter now. Sunoco refinery is just a few miles from me, and several of my shop's customers working there, I wanted to use it. VP C11 has always passed for me.