A quick note: I have a 1954 AA 130 that was a steam boiler until I converted it in 2012,........ and it tested perfectly at 50 psi for 72 hrs,; looks like new and performs as new right now.
The chemistry is the most important part, so please check the pH where you are using it and I always add boiler conditioner to every install. It is a good practice, no matter what you use to fire that boiler with.
I learned that was THE most important part of boiler operation when working with service people on commercial boilers.
'Lifetime' is not a joke when you are spending lots of cash, but poor chemistry can make for a damned short 'lifetime' for any appliance, heating of otherwise.
When I visit the local bio-fuel plants, ALL the operators say the 'chemist' is the REAL plant operator.
For all of those who didn't like studying the sciences in school, here is a down to earth, practical NEED to know/understand 'How things work'.
Being talented with your hands is a wonderful gift, and being able to mate that with using your brain, makes you a very important of society.
Just a thought......heck, most of us use the litmus strips to check our soils we grow in.....it starts right there......