Quote:
Originally Posted by Arragonis
As I only use one tank a month it takes ages to see the effect.
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I guess the logical thing to do then, would be to only fill her up half, and save another few 10s of lbs of weight. Which is what I used to do with my 2006 Fabia TDI. The weight gain can only improve your mileage, provided that you don't put in extra miles to drive towards your fuel station of choice. It won't be much, maybe half an MPG at most, but all little bits help.
Plus, of course, your shorter tank intervals should give you more tangible driving techniques vs. MPG results.
I don't consider having to tank more than once a month unreasonably frequent. Do you?