REEDOL COOLANT pre-mixed (ready to use) extended life anti-freeze/coolant is specially formulated from organic acids technology (OAT) inhibitor system. It is a combination of manyorganic acids which provides multi-metal corrosion protection, especially for aluminum. REEDOL COOLANT 50% provides maximum protection against damaging rust and corrosion in engine cooling systems does not use 2-Ethylhexanoic acid (2EH) or any other organic acid that is aggressive to hoses and gaskets.