---
kind: "section"
citation: "40 C.F.R. § 1066.145"
title: "40"
number: "1066.145"
heading: "Test fuel, engine fluids, analytical gases, and other calibration standards."
url: "https://uscodex.org/cfr/40/1066.145"
---

# §1066.145. Test fuel, engine fluids, analytical gases, and other calibration standards.

- (a) **Test fuel.** Use test fuel as specified in the standard-setting part, or as specified in [40 CFR part 1065](/cfr/40/part1065.md), [subpart H](/cfr/40/subpartH.md), if it is not specified in the standard-setting part.
- (b) **Lubricating oil.** Use lubricating oil as specified in [40 CFR 1065.740](/cfr/40/1065.740.md). For two-stroke engines that involve a specified mixture of fuel and lubricating oil, mix the lubricating oil with the fuel according to the manufacturer's specifications.
- (c) **Coolant.** For liquid-cooled engines, use coolant as specified in [40 CFR 1065.745](/cfr/40/1065.745.md).
- (d) **Analytical gases.** Use analytical gases that meet the requirements of [40 CFR 1065.750](/cfr/40/1065.750.md).
- (e) **Mass standards.** Use mass standards that meet the requirements of [40 CFR 1065.790](/cfr/40/1065.790.md).

## Notes

### Authority

Authority: 42 U.S.C. 7401-7671q.

### Source

Source: 79 FR 23823, Apr. 28, 2014, unless otherwise noted.