Yes John, I do it. Last summer I had participate at an old car's stream in the montain and procession speed was about 20mph. After 30mn (about 10 miles), my engine water temperature was above 240°F and I was obliged to stop! Usually at normal speed, water temperature doesn't exceed 220°F in my car but in this particular low traffic, only one fan was not enough to maintain a good water temperature. So, I have decide to add a second one. The first one was located in front of the radiator. It was working in pushing mode and drove by a thermostat. The second one is located in back of the radiator (see pictures). It is working in pulling mode and it is drove by a manual switch. Both fans are identical. They are 16" diameter and nominal flow is about 1800 cfm. However, with the push-pull installation the total air flow should be about 3000cfm. However, I have to confess that until now I don't need yet to switch on the second one because I don't have receive from the club any invitation to participate at a new old car's stream
