Originally posted by zgendron:
Correct me if I'm wrong, but in order to switch to an OAT Coolant, you must completely flush out the old coolant with water so that the 2 types of coolant do not mix. Is that right?

How long should you flush a system (engine running) to verify that the system is adequately flushed?


You are not wrong.

I would recommend filling the system with water running it for 10 minutes or so (get it hot) and then drain it.

Repeat that process 2 or 3 times.

Then top it off with the appropriate amount of OAT and distilled water. (remember all the plain water will not drain 100% so take that into account as well)

2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.