Thermal Charge® Original Equipment Technology™ Si-OAT (Compare to G40®)* 50/50 Prediluted Heat Transfer Fluid is a silicate-enhanced organic acid technology formula that matches the chemistry specified by stationary engine manufacturers. That means it will provide maximum protection against overheating, winter freeze-ups, metal corrosion and wet-sleeve liner cavitation, even under severe-duty, continuous operation. Its phosphate-free formula helps prevent scaling that can impede heat transfer and cause cylinder head cracking.
*G40 is a registered trademark of Valvoline Inc. or its affiliates