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I'm on a cross country trip, and my mileage has taken a big hit since I reached the SE states, where E10 is in all the pumps. The competition logs allow a 5% correction factor for E10. If I get 39 mpg, say 390 miles on 10 gallons on E10, is it ethical to enter 9.5 gallons of fuel used, to get a 41 mpg mpg that is more reflective of my real mileage?

What I do is just enter the tank as an E10 tank. For the challenge log however, you can enter the 3% reduction for your car's comined epa rating.

Hi Darrell:

___The challenge logs are fine to do with whatever Andrew has given but in your vehicles logs, please report your FE as is was achieved. If we all had offsets for fuel, temps, conditions, traffic, everyone would be in the hundred mpg range and it would not reflect the reality we are all striving to achieve ;)

___Good Luck

___Wayne

Thanks. I didn't want to hear that, but it makes sense. Now I have another reason to hate the SE besides its oppressive Summer weather ;).

Oppressive?? Come on now, everyone knows that when the humidity and temperature both near 100 it is a perfect summer day and that afternoon shower is on its way! It has only been in the 80’s so far this summer, just ain’t cutting it for me.

:D

For E10 and the Rocket. I believe I have been filling with it all along now, the next few tanks will tell as my new station labels the pumps as such. I consider it the cost of doing business and my mileage is what it is. BUT! If I am close enough for it to matter in the challenge, I’ll… ahh… well… not really cheat… just manipulate my challenge numbers by a tad, say… 3%, to make the pass. :eek:

Have mercy, cleanmpg, for I have sinned.

Every tank, I add anywhere from 2 to 5 miles to the miles driven. THE REASON for this is because every time I turned my engine off(P&G), my odometer stops counting until I turn my key back (to turn electronics back on). If I turn it back too fast my engine "diesels" back on(as I've told that is the term), and I don't know how good that is for my car plus it's counterproductive to P&G. If I drive 400 miles with lots of P&G I add about 5 miles, if I don't P&G I don't add any...I think it all evens out in the end.

This brings me to the following question...
Must I enter in my log the tanks and mileage my wife got while she had the car for 5 weeks this summer or can I put her mileage in a separate log?

One car, one log. There is a section for notes so that when someone checks the logs, they'll be able to see the notes and figure the differences in the tank results.

NO!!!!

Run what you brought to the game.

Whoaa! Tough crowd here.
You guys are pretty cavalier when it comes to costing somebody else their status as 'expert' and any chance of making 'elite' in the next 2 years...

Technically, you're using the wrong EPA numbers which actually cost you your expert title... I imagine I can get expert in about 5 years. :)

Hey, remember that cleanmpg'ers in many if not most states (including mine) are forced to use E10 year round, and we're not adjusting our numbers to reflect what we might get on pure gas. We're just playing it as it lays.

We don't downrate the mileage on diesels either to make them comparable to gassers and account for the higher energy content of diesel -- and the fact that it emits 15% more GHG per gallon than gasoline. Your mileage just is what it is.

I've never changed my totals, even when I'm sure there's a large fill error, usually on trips when I'm not using the normal pump at my normal gas station. At most, I might combine two tanks to even out the effects on that individual tank. But the pump reads what it reads, as the odometer, and I just live with it.

Since the east coast, for the most part, has the 10% ethanol blend, I just get a surprise when my milage jumps if I somehow get a tankful of 100% gas rather than the 10% blend. There are a couple of stations around here that have ethanol free gas available, but are sort of out of the way to stop and get the gas. I have just been keeping the log as the numbers come out with no "adjustments" as to what could be.

Too much juggling of the data, you'll come out with misleading information, sort of what our politicians do to make a point to meet their BS words.

Why should hypermiling be diff. than any other motorsport? Run what you brought or play golf!