Over pressurized antifreeze tank

[Waterloo]

Zip tie a rag over the coolant jug... That is how I got mine from Detroit to Rawze's compound in GA... I only needed one gallon of coolant for the 600 mile trip.

The NAPA block test kit has worked every time I have tried it... Just make sure the motor is warm, it may take up to 10 to 15 minutes to turn color if there is exhaust gas in the coolant. You blowing the APU hoses is exactly what mine was doing, #5 liner was the issue.