I live in Iowa and have called 3 texaco dealers in the Des Moines area, none of them have texaco STF 1874 in stock or even listed in their most recent books. Where can I buy some?? It lists on the 6 speed to use Mopar (too expensive) or this texaco product, I think someone on this site said they paid $60. 00 for 5 gallons of it a while ago (I cannot find it)