When attempting to keep the installation as "original" appearing as possible, while still employing the unique EVANS Expansion Tank/Vent techniques (see Section C 12 & 13), it will help to follow some important guidelines, as follows;

A.  Review the installation description for a low mounted expansion tank (Step 6, Page 12 or Step 6, Page 15) and the lower mounted tank schematics of Diagram 3 (Page 13) and Diagram 4 (Page 16).

B.  If the instructions are properly adhered to, then the expansion tank can easily be located extremely low, and out of view.  A location down under the car, along a frame rail for example, will work acceptably.

C.  NOTE:  It is extremely important in such "low mounted" tank installations that the requirements for the high mounted loop "A" be followed precisely (see Step 6, page 12, and Step 6, page 15) cross flow and down flow radiators respectively).

In restoration vehicles without expansion tanks and where it is not possible to add new components (I.E.; concourse vintage cars), and only the EVANS NPG Coolant can be added. Follow these procedures;

Step 1.  Drain and flush the system as detailed on Page 6.

Step 2.  Fill the engine and entire cooling system with EVANS NPG Coolant.

Step 3.  Perform the "Hot-Purge" of the system as described on Page 22.

Step 4.  At the end of the "Hot Purge", before removing the longer purging vent hose, top up the radiator within 1 to 2 inches of the top. Close up the radiator and idle the engine up to normal operating temperature.

Step 5.  During the warm up let the coolant passing out of the vent flow into an empty EVANS container.

Step 6.  Shut the engine off and remove the long purging vent hose, and reconnect the original over-flow hose to the radiator.

Step 7.  Seal the NPG Coolant container and store for future use.

Step 8.  With a tape measure check to find the level of the cold coolant down from the radiator fill neck. This is your new "cold fill" coolant level with NPG Coolant. When the vehicle warms up the level will rise to completely fill the radiator due to the expansion of the coolant.

Step 9.  If the vehicle is to be stored for a long period of time you may want to fill the radiator (when cold) with coolant all the way to the top. This will keep air out and let the NPG Coolant protect the metal during storage. When you wish to operate the vehicle merely siphon the cold level back down to your new "cold fill" level before start-up.