TDR-S PLUS is the same great laboratory tested Premium Diesel Fuel Additive formula PLUS added detergency to clean and protect today’s Tier 3 and Tier 4 engines equipped with High Pressure Common Rail (HPCR) diesel fuel injectors. Amalgamated’s detergents have been tested and certified to eliminate both conventional diesel injector nozzle deposits as well as internal diesel injector deposits (IDID) in both older and newer engines.
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