Red Line 15W40 Diesel Synthetic Motor Oil - Gallon - 4 Pack

Red Line 15W40 Diesel is a fully synthetic, high-ZDDP motor oil for medium and heavy-duty diesel truck engines, popular in light-duty diesels including Chevrolet Duramax, Dodge Cummins and Ford Power Stroke. Improved drain intervals deliver strong value for commercial fleets; meets API CK-4/CJ-4/CI-4 Plus/CF/CH-4/CF-4 and SM/SL/SJ/SH/SG/CF, ACEA A3/B3/B4 E7/E9, MB 228.1/228.31. Case of four 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