[brewerbry]

So I was proactive and replaced the coolant tank this winter along with water pump and low temp thermostat. I use the airlift today to make sure there is not air in the coolant system and it will not hold a vacuum. I can get it to 25 psi vacuum but it drops to 0 in about 10 - 15 seconds.

My guess is the new tank has a leak - yes, I know, I went with a cheapo and not factory and am probably paying the price now.

What is the downside or risk with a tank that is not airtight? Does it need to be replaced immediately or can it wait? Is it just the nuisance coolant drip on the garage floor or something more drastic?

Thanks-