Originally Posted by YoVuelo
I tested my tanks using the manometer method. I waited till both were completed and set them up side by side on individual manometers. I "calibrated" the fluid level in each side so they were equal and then pressurized each tank to 27". You don't have to worry about over pressurizing the tanks as the water will just vent out of the manometer if you get carried away. I watched my tanks track within 1/2" of each other over three days. As they tracked together for that length of time, they are either leak free or both leak at the exact same rate. I'm working in an AZ hanger and saw some pretty wild swings with the daily temp changes, but they always tracked true with each other.
If the 5" change can't be explained by temperature, then I would suspect a leak in the tank or in your test system. I used a bit of fuel lube on all of the joints to ensure leak free connections.
Same here. Mine were inside so fluctuations were minor. After a couple weeks, I called them good. They were both within 1/2" of where they started.
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I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.