The 2026 Heavy Duty Reference Guide is now available for download, complemented by our Guardol^® Lineup Charts—giving you both detailed specifications and quick-glance product overviews.

With these resources, you’ll have access to:

• Cross-reference data for Phillips 66^® and Kendall^® products alongside competitor offerings.
• Current licensing and approval information across the heavy-duty lineup.
• Easy-to-scan Guardol^® Lineup Charts summarizing Heavy Duty Engine Oils.
• Streamlined formats designed for both quick reference and deeper product comparisons.

Whether you’re preparing for customer conversations or validating product specifications, the Heavy Duty Reference Guide and Guardol^® Lineup Charts work together to support clear, confident decision-making.