[nathanmargolis]

In the past with a C3 Corvette that I owned for over 30 years, had to go through the burping process since engine sat taller than the radiator in flushing radiator process.

Not sure the issue with a Backdraft as the water tank is higher than the engine block. Just did the first flush on a pre-owned Backdraft purchased five months ago. Did jack up one side of the car to get a little height, pulled plug, drained, installed plug, filled with distilled water plus the pink Water Wetter.

The only issue I had was stupid me, tried to tweek the plastic drain plub with a short box end wrench and broke the drain plug. Came out extremently easy with a small easyout but had to wait on a drain plug from Iconic.

Car runs cool as a cucumber in Texas heat- right at 180 degrees in 100 degree days and sitting at red lights. Now the AC in the car doesn't work with a darn. :-)