{"data":{"id":"us/40-cfr-1065.745","jurisdiction":"us","citation":"40 CFR 1065.745","heading":"Coolants.","body":"(a) You may use commercially available antifreeze mixtures or other coolants that will be used in your engine in use.\n(b) For laboratory testing of liquid-cooled engines, you may use water with or without rust inhibitors.\n(c) For coolants allowed in paragraphs (a) and (b) of this section, you may use rust inhibitors and additives required for lubricity, up to the levels that the additive manufacturer recommends.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER U—AIR POLLUTION CONTROLS","PART 1065—ENGINE-TESTING PROCEDURES","Subpart H—Engine Fluids, Test Fuels, Analytical Gases and Other Calibration Standards"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"b6c918471f3543668eda3e21595b01f94ebf0656be53789ac1f757bded3fd401","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-1065.740","next":"us/40-cfr-1065.750"},"notice":"GroundRules: Original legal text. Not legal advice."}