Done a headgasket test with the blue fluid

[Fretzy]

Hi guys i dont a test with the blue fluid and it remained blue for the 15 minutes I done it for my only concern is I didnt see the blue fluid moving in the test tube such as bubbling up and im worried ive done something wrong

 

[Fretzy]

Engine was up to operating temperature and gave it a few revs also

 

[sczamun]

Never used this specific design, but usually you don't want bubbles...that would be the gasses from the cylinder seeping past the headgasket into the cooling system. As the system gets hotter there might be some bubbles.