Hiker, I agree. I keep the level as shown in the owners manual. Never overflows.
I had a Mustangs Plus 3 row radiator in the fastback before it got tore apart. Filled up to specs it would spit coolant when parked. It liked a level such that you could see the fins inside the tank. Never ran hot. Drove the car as a daily driver 10 years like that. I think it took me 2-3 years before I stopped topping it off and just left it level with the fins.
68 J-code Fastback - owned since Jan 1994
68 C-Code Coupe
78 F-150 4x4
I have a plastic universal from autozone. These are a necessity in AZ if you are going to drive your car. I wanted to keep the engine bay looking stock so I mounted it in the front fender well directly in front of the tire on the drivers side. Can't see it in the engine bay and still works perfect.
I use an aluminum with a screw on cap as others do. Works well and looks nice next to aluminum radiator. I also use the cap shown in the picture w/ a double gasket. It was 104 on monday in dallas so I found it necessary to have a good cooling setup uncluding overflow tank.
I have this one from Jegs. Didn't even have to drill any holes. Everything secured on nicely on some pre-existing rad bracket holes.
Wanted to ask a few questions on this. 1) how do you like the Jegs product? 2) how did you install it, as a overflow tank or a recirculation tank? 3) what's the difference between the two installs? 4) did you use the Jeg's bracket to install this or drill your own holes?
Thanks! I've just bought a 65 Fastback and of course am having a little overflow after short trips.