This is how you purge the Oasis CH50 with the DM12.
You will need the following...
1. 45psi purge pump/sureflow water pump
2. 3/4'' heater hose
3. 3/4'' Clamps
4. A large bucket
5. Cooant
After watching the video and you have any questions, concerns, or just need parts call us @ ITR 360-993-4877