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Forum: General Fuel Topics

02-25-2012, 04:45 AM

Replies: 19

Better gas mileage when tank is half full?? See my scenario

Views: 4,523

Posted By theholycow

Re: Better gas mileage when tank is half full?? See my scenario

I thought of the pressure thing, but the computer will adjust for that based on O2 sensor readings...or it'll throw a code.

The weight issue would matter to weight-sensitive cars but I don't...

Forum: General Fuel Topics

02-24-2012, 09:18 AM

Replies: 19

Better gas mileage when tank is half full?? See my scenario

Views: 4,523

Posted By theholycow

Re: Better gas mileage when tank is half full?? See my scenario

I'd be interested to see a gaslog showing it working over the course of 100 gallons or more. I cannot think of a logical reason for it to help.

Forum: General Fuel Topics

02-23-2012, 10:33 AM

Replies: 19

Better gas mileage when tank is half full?? See my scenario

Views: 4,523

Posted By theholycow

Re: Better gas mileage when tank is half full?? See my scenario

If you top off a half gallon on a 12 gallon fill, that will be 4%, or 1.2mpg. If you top off a half gallon on a 6 gallon fill, that would be 8%, or 2.4mpg. That's in addition to normal fluctuations...

Forum: General Fuel Topics

02-23-2012, 09:33 AM

Replies: 19

Better gas mileage when tank is half full?? See my scenario

Views: 4,523

Posted By theholycow

Re: Better gas mileage when tank is half full?? See my scenario

Gas gauges are neither linear nor accurate. When I've used 25% of my gauge, I've used about half of my tank.

That issue aside, the only vaguely accurate way to know your fuel economy is to fill up...

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