I have used it for 4 years in my '38 Chevy running a blown/stroked 383 running Nitrous. 4pound radiator cap. The previous owner had already put Evans in it and I just continued. Blew a head gasket and Evans didn't hurt anything. The only thing you need to know is after it has been run through an engine, Evans looks exactly like dirty
oil, which is what I thought it was when I got a little overflow when I refilled the radiator. You don't need a catch tank because Evans has a higher boiling point and does not expand like water with
antifreeze. It holds its level. Just changes color. Never had a problem with the stuff. It's a big engine in a real small space so I don't want to take any chances. It doesn't overheat with the Evans in it so I don't mess with it. The Cobra doesn't have any overheating issues so I never felt the need to run it in that.