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(a) Use commercially available lubricating oil that represents the oil that will be used in your engine in use.
(b) You may use lubrication additives, up to the levels that the additive manufacturer recommends.
Cite this article: FindLaw.com - Code of Federal Regulations Title 40. Protection of Environment § 40.1065.740 Lubricants - last updated October 03, 2022 | https://codes.findlaw.com/cfr/title-40-protection-of-environment/cfr-sect-40-1065-740/
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