Since you have a replacement engine,
and gasoline prices have recently made a big jump,
now would be a good time to try some aerodynamic mods
on your truck and enclosed trailer.
Start with something “dirt cheap”
like adding a “pool noodle” to the bottom of your truck’s front air dam.
Homemade “Wheeler Vortex Generators”
https://patents.google.com/patent/US5058837A/en?oq=5058837or commercial “Airtabs”
added to the rear edges of your enclosed trailer
might increase fuel economy, and make the trailer ‘wiggle less” in cross winds.
I am sure that you have seen such mods on the 18 wheel trucks on the interstates.
