Reco-Cool Expert EXTREME Pre-Diluted GF Coolant is a long-life coolant designed for heavy-duty diesel, gasoline, and natural gas engines. It uses OAT corrosion inhibitor technology with added nitrites and molybdates for extra protection but is free from amines, borates, nitrates, phosphates, and silicates. This coolant provides excellent corrosion protection for engine cooling systems without needing supplemental coolant additives (SCAs). It is pre-diluted and ready to use, making it ideal for various applications, including on-road, off-road, marine, farming, mining, and construction equipment. Additionally, it is suitable for mixed fleets, offering protection for both heavy-duty and light-duty engines.