{"nhtsa_id":10089337,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-01-23","date":"2016-11-10","document_id":"M0066850-01","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"EXTENDED LIFE COOLANT (ELC) EXHIBITING NITRITE DEPLETION IN MACHINES EQUIPPED WITH ALUMINUM RADIATORS-NITRITES IN EXTENDED LIFE COOLANT (ELC) CAN REACT WITH THE ALUMINUM COOLER TO PRODUCE ELEVATED PH AND LOW NITRITE LEVELS IN SCHEDULE OIL SAMPLING (S@™O@™S) SAMPLES. AS THERE ARE MULTIPLE ISSUES THAT CAN CONTRIBUTE TO THE DEPLETION OF NITRITE, CONTACT YOUR LOCAL CAT DEALER TO REQUEST LEVEL 2 COOLANT ANALYSIS IF NITRITE DEPLETION IS EXPERIENCED.","document":null,"url":"https://open.wenmarpro.com/bulletins/10089337","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CATERPILLAR","model":"CT660","year_from":2012,"year_to":2017,"match":null,"vehicle_ids":[]},{"make":"CATERPILLAR","model":"CT680","year_from":2012,"year_to":2017,"match":null,"vehicle_ids":[]},{"make":"CATERPILLAR","model":"CT681","year_from":2012,"year_to":2017,"match":null,"vehicle_ids":[]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}