StacksVerified U.S. regulatory reference

40 CFR §1065.740

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)Use commercially available lubricating oil that represents the oil that will be used in your engine in use.
  2. (b)You may use lubrication additives, up to the levels that the additive manufacturer recommends.