I bought the 500 watt model.
Gets real hot real fast.
Took front grill off the 4500 and placed it on the underside of the hydro reserve.
After 2-3 hrs the whole nose is warm.
Still need to let tractor idle to warm up
and run hydro"s slow to let all that ice cold fluid in the cylinders mix in the hot fluid in the nose.
Hate when the hydro pump squawks.