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This was after approx 600 miles of driving between St Louis and KC. Probably 100 of those miles were idling and stop and go around town driving while I was running appointments. I remote started it for 10 minutes yesterday morning. The first 230 were against a 12 MPH SW headwind.
648 miles to empty and computer says 19.8 MPG for the 600 mile trip. I will take it.
Maybe this PSD is loosening up after 15,000 miles.
The DTE algorithm is a little funny. I get over 750 miles on a tank, but it always shows 660-670 miles DTE when I fill. It will continue showing 600+ DTE for the next 150 - 200 miles.
Though I have the 6.2, I set the DTE to "Towing" as it uses a smaller mileage spread to calculate the DTE. I have found this to be generally more accurate, especially in mixed driving.
It’s called Road Trip. It also automatically backs up to Box so you will never loose your data. It will sync across devices too. It’s the one with the red gas pump...oops I menant to say diesel pump. LOL.
My computer MPG says 19.8 and they covers my last 2 fill ups which were 18.47 and 18.59. It’s a bit optimistic.
The computer measures fuel consumption based upon a knowledge of exactly how much fuel is released into the engine with each injector pulse. Your fuelly app measures fuel consumption based upon miles covered and gallons pumped at a fill-up. Both methods use the vehicle's odometer to obtain the distance traveled. Since filling up is hardly an exact science while injector pulses are, I would trust the computer more. That said, manufacturers have been known to "tweak" the algorithm to make the mpg more favorable than it really is.
DTE is a less precise calculation, relying on an estimate of how much fuel remains in the tank which is based upon a float level in the tank. That info is combined with a running average of fuel consumption.
I agree. Yet in my experience vehicle trip computers are typically pretty optimistic.
I believe eve I have the past 5,000 or so miles saved in my trip 2. I will have to check that against my manual MPG over that same distance to see if it’s also running around 1.3 MPG optimistic.
Over 600 miles I believe we can see some variances. But over large distances the truth should come out.
It’s called Road Trip. It also automatically backs up to Box so you will never loose your data. It will sync across devices too. It’s the one with the red gas pump...oops I menant to say diesel pump. LOL.
The computer measures fuel consumption based upon a knowledge of exactly how much fuel is released into the engine with each injector pulse. Your fuelly app measures fuel consumption based upon miles covered and gallons pumped at a fill-up. Both methods use the vehicle's odometer to obtain the distance traveled. Since filling up is hardly an exact science while injector pulses are, I would trust the computer more.
If I drive 96 miles round trip 5x a week and I put in 30 gallons of fuel each week, that's 16 mpg. If my "computer" says 16.5, it's wrong. Real life miles and real life gallons paid for out of your wallet (and tracked on paper or in an app on your phone) are far more accurate than any computer estimating MPGs based on algorithms.
If I drive 96 miles round trip 5x a week and I put in 30 gallons of fuel each week, that's 16 mpg. If my "computer" says 16.5, it's wrong. Real life miles and real life gallons paid for out of your wallet (and tracked on paper or in an app on your phone) are far more accurate than any computer estimating MPGs based on algorithms.
You can put 30 gallons in every week and divide it into how many miles you’ve driven, but without knowing what is left in the tank, you really don’t know your actual fuel consumption.
The computer isn’t using an algorithm- it’s counting pulses and multiplying each pulse by the measured amount of fuel the pulse delivers. Unless the manufacturer intentionally alters it, the computer method is dead accurate.
