Home › CFR › Title 16 › Part 31116 CFR Part 311 — Test Procedures and Labeling Standards for Recycled Oil§ 311.1— Definitions.§ 311.2— Stayed or invalid parts.§ 311.3— Preemption.§ 311.4— Testing.§ 311.5— Labeling.§ 311.6— Prohibited acts.