And, avoid units that circulate water thru various hoses. Stick with the correct DD recomended unit. They are cheap to buy. May be a PITA to install. You'll have to drain the coolant. Have fun! HTH, JR
Speaking of block heaters, is it normal not to see an increase in the current draw from shore power if I switch the block heater on when it's above about 40 degrees. In other words, does it have a built-in thermostat that keeps it from coming on when the outdoor temp is not low enough to need it? I'm trying to figure out whether or not mine is working.ThanksDennis
For what it's worth my opion- cool weather, -15C or 5F and warmer block heater only is lots good enough--15C or 5F to -25C or -13F block heater with oil pan heater is good although the block heater should do it but the with the oil warm it is easier on the engine.-25C or -13F and colder a webasto is the way to go. Block heater should start it but the webasto provides better heat with easier startsHave Fun