Yes it is hopper cooled.
I agree with the propane for short runs.
The last 2 outages lasted for a week each,this summer.
I do not want a large propane tank in the yard and the amount
of propane needed for 24x7 for a week or more is a lot of expensive fuel. There was still a lot of diesel available after the
gas pumps were empty this summer.I also want to use this diesel for other projects.
My98tj