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Originally Posted by phunky.buddha
Totally agree. I have a lead foot. Trust me though- the driving habits make quite a bit of difference, especially with that engine- since lean burn is when it gets the best economy.
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I guess we'll have to teach him some new habits then! I bet if I told him some basics of driving with FE in mind, made it a game kinda, and he got good mileage on one tank, he'd be hooked.
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Originally Posted by SVOboy
Don't forget, the HF did have a pretty stellar EPA rating, the VX's improvement mainly come in the form of power, not so much in FE. This might be an issue of not knowing how to drive the VX as well as it could be driven.
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This is very true. Getting the same FE as before, but with 20 more HP and a healthier motor overall isn't such a bad thing.
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Originally Posted by Old Mechanic
Some thoughts. Make sure the system is not overcharged, more work for no gain. Try to get Dad to use max AC plus recirculate with lowest tolerable fan speeds. Best method is to use the compressor when you must decelerate so the lost energy is converted to cold evaporator temps. Recirculate is the key to cooler air with lower energy cost since once you get the humidity out the air is much easier to keep cool. Cycling the compressor on and off may be too much work for Pop but it would also help to improve mileage. You may find that the mileage he is getting is not that far off from the best you can expect unless you really concentrate on efficient driving and best AC use strategy.
regards
Mech
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I'll try to explain that to him... see if he believes it or not.
In other news, his last tank was 48.8MPG, and he says he used the AC for about "a third" of the tank. Sigh... At least I know it's now equal to the best he ever got before, and the best he ever got before was with no AC in the spring.
And just to pacify the non-believers out there:
