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Old 01-20-2016, 10:12 AM   #21 (permalink)
ksa8907
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Quote:
Originally Posted by johnlvs2run View Post
I'm interested in your tests of coasting at 1 rpm, and how they support your theory that coasting rpm makes no significant difference to mileage. Likewise, please post some evidence that 3000 rpm, for example, is no worse for mileage then 1500 rpm, and whether this applies to gas use when idling at a stop, as well as when coasting.
Fuel consumption is more dependent on engine load than engine speed, particularly when engine speeds are well below the normal torque curve. The question directly related to the OP and his/her situation: Is the additional fuel usage from the elevated idle enough to actually be concerned with? We don't know until it is measured.

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