If you want to heat up your LOVE solution, try this. Anyone that has read articles pertaining to Diesel engines running off of used cooking oil, will relate to this. Same theory.

Probably will only work easily when your equipment is mounted on your truck. Trailers, maybe, but will require more work.

Fabricate a loop (coil) of 3/4" copper pipe, may be able to use black plastic, that is able to be placed into your chemical tank from the bottom to the top. Make sure you have both ends protruding from the tank for connections. The more loops in the coil, the better it works. Under the hood of your truck, run a new hose from the water pump to the coil, and a new hose from the coil to wherever  you disconnected the hose from that went to the coil from the water pump. Whenever you truck engine is running, the motor coolant will be circulating through the coils in your tank, heating your love. Works great on heating cooking oil for diesel use. Most times you can reach over 160* using this method. Should work for heating LOVE also. Cheaper than buying a heated pressure washer.
Might just extend your work time a couple more weeks or give you an earlier work day on those cool mornings that Clyde talks about.