All vehicles now have ethylene glycol. Back in the day cars used propylene glycol. It is more toxic.
I have had good luck with the floating ball testers.
If you have new 50/50 coolant, which it looks like you have, check that with your tester and then check what's in the vehicle.
I have had good luck with the floating ball testers.
If you have new 50/50 coolant, which it looks like you have, check that with your tester and then check what's in the vehicle.