I think it all depends on how slow you let it get on the 'glide'. I use my FAS switch on the city streets to coast down to a light, usually a third of a mile or more depending on the timing of the light and traffic, and I have noticed a pretty strong gain on this tank. Usually I top at 45mph and let it coast down to about 20mph before the light allows me to accelerate again. This 'seems' (butt dyno
) to have improved my mileage over using just lean burn in the city.
It is my first tank with heavy use of the FAS switch, so I haven't tried to track it over the short term, since I'm more interested in the overall tank miles (still trying to break the elusive 900 miles on a tank
). It would be nice to know what the changeover point is for better mileage using lean burn or P&G (or both together).
Keep up the good work!!