Red Line Pro-Series Diesel CK4 5W40 Synthetic Motor Oil - Gallon - 3 Pack

Red Line Pro-Series Diesel CK4 5W40 is a full-synthetic, OEM-certified diesel oil for newer low-emission diesels with exhaust after-treatment as well as older diesels under extreme temperatures. It protects after-treatment systems, guards against abrasive wear and soot-induced thickening, and keeps engines clean. Approved for API CK-4/CJ-4/CI-4 Plus; recommended for ACEA E9-08/E7-08, Ford WSS-M2C171-F1, MB 228.31, Cummins CES 20086, Cat ECF-3/ECF-2/ECF-1-a, Detroit Diesel DFS 93K222, MACK EOS 4.5, Renault RLD-4, Volvo VDS-4.5. Case of three 1-gallon containers.

Specifications

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy