WIX Filters 24106 Coolant Test Kit - Accurate Testing for Optimal Engine Performance Review

The strips were delivered very quickly and were easy to use to determine the additive added to the coolant to restore its viability.

I bought these to test the coolant in our trucks which all use OAT coolant. The bottle says they are not for that and are useless for the cars I bought them for.

Didn't work for my needs but that's because I changed the type of antifreeze. Arrived dry and in good condition with over a year to go. I can't confirm the quality, so the estimate is somewhere in the middle.

After purchasing this product I found that the nitrite level was not an accurate indicator of OAT (Organic Acid Technology) or HOAT (Hybrid) coolant is. In my case my 2015 F250 diesel uses orange coolant which is OAT. So not very useful for my purposes. Most new vehicles use OAT or HOAT coolant.