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Old 10-07-2010, 02:37 AM   #3 (permalink)
bestclimb
Smeghead
 
Join Date: Oct 2009
Location: South Central AK
Posts: 933

escort - '99 ford escort sport
90 day: 42.38 mpg (US)

scoobaru - '02 Subaru Forester s
90 day: 28.65 mpg (US)
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I don't really know why a car needs a knock sensor anyway, you can tell it is knocking well before it becomes hazardous if you have the radio turned down to a normal level. That being said I would suggest running what the car calls for, if you feel like running lower grade fuel it may be economical if you are not loading engine fully as you drive now..

As for accelerating up hill to merge, those Honda motors love to rev when they need to make power, going 3/4 the way to redline if needed for short bursts (assuming it is up to temp and the oil is flowing well) will do no damage. If you can do it in 5th gear press the throttle in till it stops accelerating then back off just a bit, otherwise down shift and get the accelerating done quickly.
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