Coolant Test

[walterk]

Got it. It is somewhat confusing and seems like a waste of money at the first look. But, you are absolutely right that there might be some other contaminants that are present but not being tested for like metals, etc..
Also, the Nitride numbers going to the right is totally counterintuitive. From the table, you would think that the higher the number the better the condition of the coolant at least according to the instructions.
The test strips were good until Apr 2024.
Also, a word of advise - this red stuff is very toxic, I had some splash on my coveralls and had a red spot that was quite stingy by the end of the day. Eyes protection is a must.... Did some reading on the internet ,and getting burned with hot antifreeze is pure hell.
And for the Volvo owners:
What is going on with that quick-disconnect tool for draining leaking all over?