Water… Distilled? Purified? Hose??
Keep in mind that a Chrysler cooling system is an open system.
The cap only pressurizes when vapor builds pressure in the top tank.
The overflow tank, if there is one, is open to atmosphere.
OATs and HOATs work best when given time to build up in a closed system.
https://www.forabodiesonly.com/mopa...oolant-as-some-call-it.452254/post-1972791186
https://www.forabodiesonly.com/mopar/threads/best-antifreeze-for-old-cars.527503/post-1974077960
Keep in mind that a Chrysler cooling system is an open system.
The cap only pressurizes when vapor builds pressure in the top tank.
The overflow tank, if there is one, is open to atmosphere.
OATs and HOATs work best when given time to build up in a closed system.
https://www.forabodiesonly.com/mopa...oolant-as-some-call-it.452254/post-1972791186
https://www.forabodiesonly.com/mopar/threads/best-antifreeze-for-old-cars.527503/post-1974077960