Mines not an INDY reverse flow but when I have a priming problem I fill it and put the cap on. With the pump running I squeeze the top radiator hose to move the air pocket until I can hear it prime. Take the cap off and top off. Mine is a CSR.


2021 Dodge 2500 4WD Cummins
2020 Challenger R/T Scat Widebody
2007 Charger R/T 5.7