[Alan Roehrich]

We've had C12 from a new jug right off the VP trailer fail. More than once. We picked up some ET and consistency going from C11 to C12, and stuff stays cleaner. But it fails fuel check regularly, or comes really close. We're deciding what to switch to. And we buy ours direct from a VP distributor, by the drum. It is sealed, the fuel system in the car gets sealed, the jugs are carefully maintained and sealed, and stored in the dark. We've done everything they've asked, and still it either fails, or we get warned we're close.

We can usually pass fuel check after a problem by simply pumping it all out and flushing it. I don't remember having to do anything major. We tossed the foam years ago. It holds dirt, and it comes apart. We keep the cell topped off instead, it keeps the weight more consistent.