I have been away from class racing for quite a few years so I`ll start from the beginning of my recent experience ,right before the "Dutch Classic" last year I was given the opportunity to borrow a car for the race,the car had sat under a cover outside for about 1 year it had approx. 1/2 tank of C12 in it.
The car needed some minor work and and we did not have a lot of time to get it ready, Dennis Chapman (The cars Owner) Thought we should drain the fuel and add fresh to be sure it would pass fuel check,to make a long story short I did not drain it but brought some empty jugs along just in case,I also purchased 5 gal.s of fresh C12, Prior to the 1st. Qualifying pass I ran the car over the scales and had the old and new fuel checked,both passed!
One thing that Dennis told me to do was a soon as your done drawing the sample from the car was to cover the container with the palm of your other hand as you walk it over to the table,I have not seen this mentioned and I don`t know if it matters but I have not had a problem with fuel check.(Checked 8 times this year)
Fast forward to last weekend at Englishtown we set the C/FS record, as many of you know when you set the record you are given a tech card with the car weight and fuel test #s and the engine is sealed,then on the back up run the weight and fuel numbers are are recorded again,here`s the thing that struck me funny, the same fuel was in the car, we did not add a drop after the 1 st. run but the fuel check numbers on the card were different ! It passed both times but I wonder why there was a difference a few hours latter? Maybe temperature has something to do with it?
With fuel cost being what it is I do think that if fuel checks lower then it should you should be allowed to run it. Just my opinion!
