Quote:
Originally Posted by atomicradish
In advance, sorry if this should go under "Instrumentation" but that forum looked completely dead.
So I just bought a ScanGauge for my Honda Accord and I had used it for the "Daily" MPG tracking features prior to first fillup, and it seemed consistent with results I had previously been getting without instrumentation. Today I filled up the tank completely and followed the instructions for calibrating the device to a full tank of gas. I also reset my trip meter since I've noticed the SG does not recognize coasting with the engine off.
One shift of food delivery with Uber Eats runs me 52.0 miles. I ecodrove the hell out of that car, especially considering that I was also working. SG reports 31.5 MPG for the tank which is slightly above average for me, but I figured it was pretty accurate now that I can monitor the MPG in real time.
So I go back to the same gas station, same exact pump, and somehow the car manages to take 3.43 gallons to fillup. Barely 15 MPG.
The numbers make zero sense to me, can someone explain what might have happened? I filled to the first "click" each time as SG instructions say plus I really don't want to screw up the EVAP system. I don't think its possible to have gotten 15 MPG.
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the slope is the problem maybe a couple of inches it might have vapor locked quicker or later causing it not to fill up correctly
you can fix this by lining up the edge of your mirror with a fixed object this is what i do I even do it when i park my SUV so i don't crash into the curb when parking.. as not to damage the aluminium suspension in the front(even if you hit it slowly it could damage it or pop a tire)
also wait a min for the sloshing of the fuel if it's close to being full..
I all ready tested this as long as i fill up at my "home station" even if i filled up and only drove 70 miles it has very little effect on the results..
(as sometimes I can get CHEAPER chevron gas or mobil elsewhere i can save an extra dollar or two doing that)
overtime it will have very little effect on average MPG. my averaged dropped to 22mpg as I have only been driving City only..
it sucks i have to drive slower since the ground is wet and my tires are pretty worn out I rather spend a few $ on gas driving slower then have to pay thousands for damage repairs if I was to spin out or something
$ is better then spending $$$$