First time I bought it, was from Auto Zone.. I don't think they regularly carry it, but somebody had ordered a few cases of it and never came to get it so they put it out on the shelf.
I forget the brand name, but it had cartoonish drawings of a couple old cars and a truck on the label.
My local farm store sells the stuff in big like two gallon jugs.. but if you don't see it on the shelf, always ask.. most places that carry that kind of stuff can order it if you want it.. they just don't normally stock some things unless there is a demand.
