SEDL / STP / STP1335-EB / STP38260S

Development of an Extended-Service Coolant Filter

Mitchell, WA
Senior consultant, Venture Activities Group, BetzDearborn, Crystal Lake, IL

Hudgens, RD
Senior staff research chemist, Fleetguard/Nelson Incorporated, Cookeville, TN

Pages: 17    Published: Jan 1999

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Abstract

An extended-service engine coolant filter has been developed, using conventional supplemental coolant additive (SCA) technology. This has been achieved by the use of a proprietary polymer coating, which delays the release of active engine coolant chemistry. Initial field data show a gradual release pattern for introducing SCA chemistry into the coolant, with complete release typically occurring in the range of 70 000 to 140 000 miles (112 651-225 302 km).