I kind of do the same thing, I guess. Whenever I drove home to BC and am going through the mountains I will put a couple of tanks of the good stuff through it when I'm hitting the passes and working the engine. The rest of the time I just put in regular.
Don't know if it does any good or not, but I always feel like it'll clean things up a little while the engine is really working up those big hills.
I go home twice a year - once in the summer and once at Christmas - and usually drive so I can take the dogs. That ends up about the same, twice a year but four tanks or so.
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