My suspension guy was at the track this weekend and said he had some VP oxigenated fuel that he got at a good price,He said he got it at $10.00 a gallon. I bought 2 and 1/2 gallons and he told me to mix it with 2 1/2 93 octane. The gas was a green color and after useing it this past weekend I noticed when I came back in from a run the gas was bubbleing in the vent hose on top of the gas cap. The gas I was useing before which was cam 2 did not do this to my memory. I couldnt really tell a difference in the performace if it made any,could this type of gas mixed with 93 cause problems with stalling?