MPG major loss?

[Lt.Dan]

Brakes can drag, calipers stick all the time, either the piston is sticking, or the slides arent lubed up, and causes the pads to not disengage from the rotor. I had 2 calipers sticking on a truck i had, didnt see or smell anything, and was getting 8mpg. An Infrared thermometer showed the front right and left rear were about 100* hotter than the other 2 brake assemblies. Which was from calipers sticking. I ended up just doing a full brake job and my MPG bumped up to 12mpg. (This was on a big lifted V8 gas truck).

 

[1995f2507.3]

Also wheel bearings being good helps. Just redid mine and my rear end bearing were toast. Found 1 mpg better from changing them. I drive 50/50 city and hwy and get about 12 mpg now that I fixed a fuel leak from my fuel pressure regulator. Was seeing 9 for a while. 96 f250 4x4 with 36" super swampers with 4:10s


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