No way to tell, it is not mandated that they post the content. QT had a press release informing us they were beginning to use 10% Ethanol, but not 100% of the time. They came out on their own just to inform their customers. I still switched stations because my gauge doesn't work with Ethanol. I even went to see one of their reps with a "guaranteed gasoline" claim. They said it was probable that the ethanol was causing the problem, but due to the age of the car and that it isn't an "engine related" problem, no dice.

I agree with finding a renewable energy source, but you use more diesel (real high sulfer quality diesel) processing the land and getting the crops here. Kinda like electric cars. You have to burn a ton of coal to get one of those things going....

 

Oh shoot !!!! you guys are probably right!!! Don't know if it's ethanol, but it's the end of November, and the stations most likely switched to what we call winter gas. It always causes the mileage to drop. But I'm still only getting 12-13 m.p.g in the summer.

Anyways, thanks for opening my eyes on this one. I was really concerned about it.

 

Doesn't the EPA mandate Ethanol in congested areas? Yes, it is winter blend time for us in Virginia as well, so we get different performance this time of year.

Owner's manual for my '97 D1 lists fuel capacity as 23.4 US Gals, but I generally wait until the low fuel indicator comes on to fill up, at which point it takes about 18 gallons or so. That tells me I technically have more than 5 gallons in reserve. My "observed" mileage knocking around town is 14 mpg, so I get a range of about 250 miles until the light comes on, but I could drive perhaps another 60 miles after the light illuminates before I'm in danger of walking . I say observed, because my speedo has a 4% error on the fast side (calibrated against GPS at 65 mph), so I assume the odometer is fast as well which would lower my actual fuel economy (don't remember calibrating the odometer). My D1 is completely stock right down to the brand and size of tires, which in conjunction with tire pressure, can make a big difference on a vehicle like the Discovery.

 

ive been averaging 13.5 mpg while driving pretty hard with 33s, a roof rack, heavy bumper with winch, and lots of other toys. i usually fill up between 225-250.

 

The EPA does mandate ethanol in congested areas allyear round .
In some places its just winter, but I'm not sure if that is a
EPA mandate.

 

Due to some pretty severe groundwater contamnination problems here in CT, they banned MTBE and we're forced to run 10% EtOH year round. It only hurts for a little while, then you just go numb.