Fully Loaded - Gilroy to Burning Man and back.
30' 2001 International/AmTran
Went out 80 (flattest way) but back on 89 and 50 (steeper).
See trail here:
https://aprs.fi/#!call=a%2FKK6OQC-10...000&tail=36000
The engine is a 175HP model - trans is an AT545 (yuck)-
As others have said, going faster than this speed just turns things in to an air-brick- a solid, measured 9mpg is nothing I can complain about.
Next trip... 60MPH!
Pix:
School Bus Conversion Resources - scosol's Album: Burning Man 2017