Concentrated – requires mixing with distilled or high-quality water
Protection up to 150,000 miles (240,000 km) or 5 years, whichever comes first, in passenger cars and light trucks; up to 1,000,000 miles (1,600,000 km), 20,000 hours of operation or 8 years, whichever comes first, in heavy-duty applications
Greatly surpasses standards for metallic corrosion and erosion
Phosphate-, nitrate-, nitrite-, silicate-, borate- and amine-free
Compatible with all other antifreeze and coolant colors
AMSOIL antifreeze test strips have two different pads on them and test ALL coolant colors. The lowest reports the freezing and boiling (under pressure) protection level. The upper pad reports the pH level and shows a pass/fail area. No other testing is recommended or required. The test strips are the only way a mixture of ethylene glycol and propylene glycol can be checked for freeze protection.