A typical installation of an O-1 JR coolant filter is very basic. Locate the 2 hoses going "to and from" your heater core. The hose going "to" your heater core will have a "T" that will supply a partial flow of coolant to the input of the O-1 JR coolant filter.  The "output" line from the O-1 JR coolant filter will connect to a "T" on the "return" line from the heater core; therefore, continuously circulating a partial flow of your coolant thru the O-1 JR coolant filter. After installation and servicing of the GCF element, a quart of coolant will need to be added to your system.  We suggest adding an additional quart of antifreeze or water every other element service; you can also add a 50/50 mix of water and antifreeze. In extreme cold weather conditions, it may be necessary to add antifreeze to maintain your coolant system's protection.

** The ideal place to install the O-1 JR coolant filter is on the outside of the frame in a convenient place for servicing.

** Please be sure to check your coolant system's ability to withstand winter conditions prior to winter season via a Prestone or similar coolant tester.