I am going to have the transmission in Ford F150 serviced, new filter, gasket, and fluid. When searching the shelves of Autozone for Mercon V, they only had one brand and it costs $6 a quart. At 14 quarts, that's a hefty price tag. No gallon jugs either. Walmart luckiy had Mercon V for a tad over $3 a quart. Will the walmart ST brand be all right? Is tranny fluid like motor oil where as long as it has the starburst logo and API standards than it is at least suitable? I'm going to ask my brother in-law when I see him anyways (mechanic). Just wanted to get a little more infor first.