Hey, all. Potentially stupid question here, but this didn't make any sense to me so I'm hoping one of you whizzes can 'splain it to me.

A friend of mine recently had her '02 Jetta towed to the dealer because her battery died. The service people asked what brand of gas she uses, and she said, "whatever's cheapest." She does use the octane-rated gas that the manual recommends, but she'll fill up at any gas station (Exxon, Shell, RaceTrac, etc).

The service guys then told her that she needs to fill up at a Chevron station once in a while, and that Techron stuff will prevent future problems with her battery.

Is that sound advice? Sounds a little off, to me. Maybe it's a Jetta thing.