Block Heater Fail. Back To Drawing Board

How A Block Heater And Oil Cooler Work

I tried to install a KAT'S Inline block heater. Simply put, it won't work without modification to the cooling system. It is an inline heater that heats to 175 degrees F. The problem is, it needs a flow return path. If you merely install the heater in the lower radiator hose, it won't work because there is no way for heated coolant to flow into, through, and back out of the block. Without a return flow path to recirculate, there is no way the device can work. I may in the future do the modifications necessary but that will be a different video if I ever do it. The oil cooler is setup so coolant will flow through the oil cooler but only when the thermostat is at operating temperature and flowing into the radiator. The oil cooler relies on coolant flow through the bottom radiator hose to redirect some of that flow through the oil cooler. If there is no coolant flowing through the lower radiator hose past the reducer and the two hoses to the oil cooler send and return hoses, there is no flow, so no cooling of oil in the cooler. I hope you enjoyed this video and found it informative and useful