have a 21 inch Dewalt that has load sensing tech which will cut almost as much as the 22 inch ICE. Being rear drive with a rather quick max speed it`s my go to when not using the rider.
Due to the high resistance of using two sets of cables it would be best to let the donor vehicle run for five minutes or more to build as much charge as possible. Of course watching the cables for overheating is imperative.
After reading all the posts my suggestion to the OP is to just drive this vehicle for a month or so only checking coolant level in reservoir not radiator. Me thinks all is well, fingers crossed.