Right. It used the immediate prior mpg's and amount of fuel added (or
knowing the tank was now full) to recalculate a new DTE.
Eric Russell
Mebane, NC
http://home.mebtel.net/~ejrussell
----- Original Message -----
From: "Gerald Brazil" <gerrybraz@cablespeed.com>
To: "'Eric J Russell'" <ejrussell@mebtel.net>; "'shop-talk'"
<shop-talk@autox.team.net>
Sent: Sunday, April 11, 2010 7:20 PM
Subject: RE: [Shop-talk] How do they do that?
> No. It gave me that higher DTE reading before I had even put it in
> gear......
>
> -----Original Message-----
> From: Eric J Russell [mailto:ejrussell@mebtel.net]
> Sent: Sunday, April 11, 2010 5:10 PM
> To: Gerald Brazil; shop-talk
> Subject: Re: [Shop-talk] How do they do that?
>
> My guess - it didn't.
>
> But it did know that you were getting slightly higher (than your previous
> average) mpg during the highway cruising. It re-calculated your new DTE
> based on the full tank & recent mpg.
>
> Eric Russell
> Mebane, NC
> http://home.mebtel.net/~ejrussell
> ----- Original Message -----
>
>> I have always used 87 octane fuel. I was on a long trip recently and I
>> stopped at a gas station that had a good price.
>
>> how did it sense that I put in a different octane fuel and
>> make an adjustment to the "DTE"?
>>
>> So, when I got back on the expressway. I reset my MPG display. (I
>> typically
>> get about 21.9 MPG at expressway speeds, 75-79) I drove nearly 400 miles
>> before refueling. My MPG was 23.5. At this stop I decided to push the
>> envelope further. I purchased the premium, 93 octane. This time when I
>> turned on the engine the DTE showed 468! Again, how is it able to
>> immediately sense what fuel I put in? After this, I drove for 331 miles
>> and
>> averaged 25.8 MPG.
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