C-11

[Ryan Horensky]

Has anyone had any issues with C-11 passing fuel check? I buy in sealed 5-gallon containers. Fuel passed fine at the Lebanon Valley Divisional. During the Columbus Divisional, fuel checked fine during qualifying. I had my fuel checked after 4th round of eliminations and I was told it checked good, but it's close to going on the bad side. When I asked what he meant, I was told the fuel is borderline dead. I then took the container to fuel check the next morning and was told it was no good. I then opened a sealed 5-gallon container at fuel check and had that checked. I was told the fuel out of the new sealed container was worse and did not pass. The date on the sealed container and the already open container was March 2020. I have been told the fuel has a 3 year shelf life in the sealed 5-gallon containers. Not sure how much truth there is to this? After scrambling for fuel, I ended up having to put C-25 in the car for the SportsNats. The C-25 was in a plastic jug out of a 55-Gallon drum. The C-25 passed fine. Not sure if anyone else has had similar issues with C-11?

[Mike Taylor 3601]

Only time I have had any issues is if I leave fuel in the cel or plastic jug a weekl..I have had C-11 from 3 year old drum pass fine.. unless I leave in cell or plastic jug a week..
I had some test stale at Columbus too...alot of people in line with me were... I went back and put new I had just took from new drum and was good then..

[Lee Valentine]

We had a time when Bryan passed and I failed both filled with the same jug before run.

[Jeff Niceswanger]

Originally Posted by Ryan Horensky

Has anyone had any issues with C-11 passing fuel check? I buy in sealed 5-gallon containers. Fuel passed fine at the Lebanon Valley Divisional. During the Columbus Divisional, fuel checked fine during qualifying. I had my fuel checked after 4th round of eliminations and I was told it checked good, but it's close to going on the bad side. When I asked what he meant, I was told the fuel is borderline dead. I then took the container to fuel check the next morning and was told it was no good. I then opened a sealed 5-gallon container at fuel check and had that checked. I was told the fuel out of the new sealed container was worse and did not pass. The date on the sealed container and the already open container was March 2020. I have been told the fuel has a 3 year shelf life in the sealed 5-gallon containers. Not sure how much truth there is to this? After scrambling for fuel, I ended up having to put C-25 in the car for the SportsNats. The C-25 was in a plastic jug out of a 55-Gallon drum. The C-25 passed fine. Not sure if anyone else has had similar issues with C-11?

Yep, last year, identical. VP took back 30 gallon from me and replaced it. I was told by Pete(at fuel check in div 3) that C-11 is a problem in hot muggy weather. I'm switching to 12 . Not worth the hassle

[Jackie McCracken]

Originally Posted by Jeff Niceswanger

Yep, last year, identical. VP took back 30 gallon from me and replaced it. I was told by Pete(at fuel check in div 3) that C-11 is a problem in hot muggy weather. I'm switching to 12 . Not worth the hassle

I used to do fuel check and never had any problems with C11 that I can remember but not many people run it so it's hard to say if there's a pattern. I will say this, of all the fuels I tested I had the most problems with C12 but everybody and his brother runs it and I'm sure that a lot of it is not properly cared for. The best of all the fuels was C25 but when you consider that's what the Pro's and most of Comp run it ought to be.


Some tips for the fuel check categories: Keep you fuel in a cool dark place in air tight containers, avoid plastic because it's porous and "breathes". Something a lot of people get wanged for is switching fuels and not completely flushing the system before they pull a sample for fuel check. Residual fuel can contaminate your system, and never put "preservatives" in your fuel or use WD40 anywhere near your fuel or fuel system.


some anecdotes: for grins I once took a fuel cup of "perfect" C25 and left it sit on the table checking it every15 minutes or so, it was marginal after 30 minutes and failed after 60.. ponder that....


And last but not least, if you EVER put unleaded fuel in your system, it takes a LONG TIME for it to go away and requires some serious flushing before it will pass with anything else in the system. I once had a famous south Lousyanna participant with a spanking new drag pack Challenger that would not pass check even though the jug that it came from was "perfect"... what caused it was the unleaded the factory put in them so they could move the cars around the lots, (they don't do this anymore btw). They ended up pulling the whole fuel system out of the car and flushing it and all it's filters in C12.. made a bunch of pit scooter gas out of it. After the full wash/flush it would barely pass although every run it made it got better and at the next event the fuel in the car tested the same the fuel in the jug. ;-)

[REGGIE WINKLES]

No issues with C-11 in 15 years. Always use 5 gallon pails.

[GTX JOHN]

We have some borderline at fuel check.....

Always close enough they have warned me to
replace = Not quite bad enough for a hard fail!

[Pedigo Perf]

I was told that bad C-11 was why Darrel Goheen got DQ'd at Topeka during eliminations.
He bought his in Kansas.

[Signman]

Ryan
Race fuels in general don't like being stored in hot locations like leaving it in the trailer week or more between races. Been there.

As stated it does not store at all in plastic jugs. Been there.

Race fuel does not like large changes in temp store in a cool as possible stable temp like a garage. I store it in my shop or garage, sheds can get really hot.

And this one is unavoidable it really does not like being shaken as in when traveling to and from races. Whether sealed or not.
VP themselves told me 5 gallon cans even if sealed are not 100% only drums are reliable. The crush seal around the spout is not the greatest.

[5389stk]

Watch where you buy from. Large distributors buy empty 5 gallon cans and seals and package there own out of underground tanks. You have no idea how old it is. 55 gallon drums are ok.