am i nuts

[JeepINgeek]

i think my mileage improved after diff and xfercase fluid change..

 

[osufans]

mine has improved too, but i think it may be due to the seasonable weather around here. warmer air provides better gas mileage (to an extent) and the nice 70* weather around here that we have had allows for driving without the A/C. all of that combined provides better fuel economy than cold weather driving, or extremely hot driving.

plus, your fluid changes probably didn't hurt any.

 

[Dave]

nuts......

Dave

 

[JeepINgeek]

i wondered who would be the first one to reply with that.... thanks DAVE!!! lol

 

[LibertyFever]

Don't the fuel oil companies change the fuel formulas from winter to summer? I imagine the octane stays the same but the additives they add/subtract may affect your fuel mileage.

Also I've heard that switching to a synthetic lubricant will improve gas mileage and synthetics can be bought for everything from the engine bay to the rear axle.



and to answer the original question,
I've heard it from reliable sources that you are nuts

 

[LibertyTC]

You will always get more fuel mileage from lube and fluid changes! screwy.gif

This guy is normal too, even though he lost the connection to KJC forum.
http://www.youtube.com/watch?v=C5X8I_iClpk

 

[OneOneNiner]

nuts......

Dave

I'll 2nd that.

If anything the thicker new fluid would cause more resistance than the thinned out old stuff.