Abstract: A resiliently flexible seal for use in substantially reducing recirculation of air from a fan discharge side to a fan suction side through a clearance between cooperating fan and shroud members of a fan assembly. The resiliently flexible seal is disposed in the clearance and maintains virtually continuous sealing contact with both the fan and the shroud members.

Abstract: An internal combustion engine cooling system is disclosed which utilizes a coolant having a greater viscosity and film strength then water. Heat is transferred from the coolant as it flows through a radiator assembly. The coolant is directed through multiple heat transfer passes defined by core tubes and headers of the radiator with the coolant moving through the core tubes of each pass at a flow velocity which insures a Reynolds number of no less than 5000. The flow velocity is substantially reduced in a header communicating the core tubes of successive heat transfer passes so that a region of substantially quiescent coolant is produced in the header. Air or gas in the coolant is collected and expelled from the header adjacent the quiescent coolant region.

Abstract: An internal combustion engine cooling system is disclosed which utilizes a coolant having a greater viscosity and film strength than water. Heat is transferred from the coolant as it flows through a radiator assembly. The coolant is directed through multiple heat transfer passes defined by core tubes and headers of the radiator with the coolant moving through the core tubes of each pass at a flow velocity which insures a Reynolds number of no less than 5000. The flow velocity is substantially reduced in a header communicating the core tubes of successive heat transfer passes so that a region of substantially quiescent coolant is produced in the header. Air or gas in the coolant is collected and expelled from the header adjacent the quiescent coolant region.