Latest from Pacific Petroleum & Supply

Selecting diesel engine oil for fleets

Choosing the Right Diesel Engine Oil for Fleets (2025 Guide)

Updated: 2025-10-02 · 5-min read

Viscosity, OEM approvals (e.g., API CK-4/FA-4), drain intervals, and duty cycle matter more than brand names. This guide explains when to step up to synthetic blends, how to balance fuel economy versus wear protection, and what data to log to extend oil life without risking downtime.

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Cold-weather diesel additives and gelling prevention

Cold-Weather Fuel Additives: Prevent Gelling and Downtime

Updated: Soon · 4-min read

As temperatures drop, paraffin crystals can clog filters and shut trucks down. Learn the difference between anti-gel vs. cetane improvers, how to treat bulk tanks correctly, and the pre-trip checks shops should add to winter PMs to keep vehicles starting and idling reliably.

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