I've looked at the FAQ and couldn't find a definitive protocol for the overflow bubble test when suspecting HG failure.
What rpm should be used and at what duration?
Do you examine for bubbles while at "X" rpm or after during idle?
Should this be done cold or at operating temp?
Radiator cap on or off?
What rpm should be used and at what duration?
Do you examine for bubbles while at "X" rpm or after during idle?
Should this be done cold or at operating temp?
Radiator cap on or off?