I have been keeping track of my OHC and found it to be bang on with my own paper calculations. I get 18.6 OHC and 18.56 by paper. Anyone else getting that close. I see a lot of you guys saying the OHC is inaccurate but .04 seems pretty close to me.

On another note, when accelerating from a dead stop how low does your OHC get. Mine usually hits 1 or 2 MPG during acceleration.

 

I think mine's fairly accurate on the MPG. The temperature readout, on the other hand, varies from 4-8 degrees too high. Accelerating, if I'm empty, it normally doesn't drop below about 3 or 4 mpg unless I'm really on it. Let off the gas and coast on a good slope, and I can easily get it to read 99 mpg.

 

mine reads .4 high on average. usually drops to 4 pedal down