Patent ID: 7156055

Claim:
A system for separating coolants and reducing the likelihood of coolant contamination between tractor engines and associated trailers, said system comprising: a control switch mounted to an internal cabin of the tractor such that a driver can manually toggle said system between operating and non-operating modes, said control switch being electrically mated to an existing power source of the tractor; a first coolant housed within the tractor's engine; a second coolant housed within a trailer's heating system; means for simultaneously transferring heat from said first coolant to said second coolant while maintaining said first and second coolants isolated during operating conditions; means for controlling an input flow rate of said second coolant upstream from said heat transfer means; and means for replenishing a selected quantity of said second coolant as heat is transferred between said first and second coolants; wherein said first coolant has a first temperature entering said heat transferring means and further has a second temperature exiting said heat transferring means; wherein said second coolant has a first temperature entering said heat transferring means and further has a second temperature exiting said heat transferring means.