YES, about BTU's but we arent measuring thermal potential...we need mechanicle energy...

and if you recall oil lines the walls of the cylinder with a film coat...

and my last example i will provide to you are these two facts:

1. some auto manufactures do not honor repairs caused by gas with more than 20% ethanol as it is harmful to the non flex-fuel engine

2. per owners manual for 2001 voyager with flex fuel engine

....vehicals has been specially equiped for running E85 fuel, like an increased coolant system with a larger capacity....it also talks about oil..... if using E85 fuel, more frequent oil changes will be needed at a rate of every 3000miles as compared to the manual's recomendation of standard gas with oil changes at every 5000 miles....

and after all OEM recommendations are for the promotion of long engine life and efficiancy....

 

4 litre, '98 LTD all stock. Around 23 mpg at 75 - 80 with cruise control on, around 16 - 17 around town. Of course it is fun to watch the figure fall in the traffic light drag race!

 

Stock 1999 XJ with 140K

Hwy w/o air ~ 19

City w/o air ~ 15

Hwy pulling a 1500 lb fly fishing boat through the Ozarks 13.5

 

Stock 99 XJ, 152K
12-12 city
20 highway
what is seafoam, & does it clean the injectors, or is it best to remove.
Extremely non-mechanically inclined.
Lastly, how do you clean drain to prevent rain water dripping on passenger side?

 

96 XJ 4.0L AW4 4x4, 3.73 gears, Flowmaster Super 40, 3 inch lift, 31s, Roof rack with roof mounted spare, etc.

Just did an oil change, cleaned the throttle body, and ran some seafoam through the intake. Here are my results:

City: 13.75mpg on average
Highway: 19mpg on average

Not too bad considering it's about the same mileage as it was brand new and stock.

I have 73k on the odometer.

 

wanted- a white 1990 Cherokee or somewhere close. I want it to be showroom stock with trailer hitch to pull my 15 ft. fishing boat. it must have cold air and 2 or 4 wheel drive-rather have 4 but 2 will do if the price is right!

 

Stock. No ac compressor/smaller serp belt:

19 city, 22 hwy if I stay under 70.

If you can't be good, be good at it!

 

Ummm...okay

Anyways, my info's in my signature.

City 13-16
hwy 18-21

 

15 MPG average
1999 XJ Limited

 

99 Cherokee Sport get 14.5 in city to 15 depending on how I drive. I get 16 on the interstate for short jaunts and can get it up to 18 on longer trips. I didnt buy a Jeep Cherokee because I wanted good gas mileage My fuel pump was going out a while back and I was getting 10 MPG to 14 depending on how the Jeep felt that day XD

 

about 15 city and I drive like a man. almost 200k on the clock

 

I keep track of my numbers as a just in case so i can monitor if something goes bad.

Pertinent Info:
~I Have exhaust leak in the #6 down pipe
~Fire & Recovery Gear in "Trunk" - ZJ metal gas tank skid - Class V Hitch
(extra weight = maybe 300lbs/400lbs)
~She is a Daily Driver as well as Farm Use & Emergency Rescue & Recovery Vehicle
~Stock swing arm tire carrier and spare tire

My A/C Doesnt Work - Its Summer I Drive with 4 x 60+ air

~1987 Jeep Cherokee XJ
~87,5xx miles
~50 miles round trip from home to work - 6 days a week
~2" bb - 31x10.5 M/S - 3.07 r&p

~City = 10 miles 0 mph - 40 mph
~Hwy = 40 miles 55 mph - 80 mph

Not that I think it makes a differnce at this point but I weigh in at 175lbs and carry a 20lb pug with me on 90% of my trips

18.2 mpg
Im Satisfied considering all things

 

16/20 130xxx miles

 

20 MPG for last to fill ups, since I bought the Jeep.
94 Sport, 5 speed, 4x4, 6 cylinder, 255k miles. Stock. Rusted exhaust and cracked manifold. I am shifting when light tells me to.
It is better than my G8 GXP on same route, to work and back, but I can't hyper mill the G8

 

93 ZJ with the 5.2lt mill. Free flowing intake tubes but otherwise stock. Over 19mpg on trips, 18.3mpg to work combined town and highway. 14mpg 100% in town.
When I bought it, the owner told me less than 10mpg, and the average on the roof was 9.8mpg.

Ron