Costco is offering their members their 5-Quart Kirkland Signature Full Synthetic Motor Oil ((4-Pack) in a few different weights to choose form for $53.99 with Free shipping or in-club for a limited time. Offer ends May 4, 2025. [Club Locator]

Available weights:

• Kirkland Signature 0W-20 Full Synthetic Motor Oil 5-quart, 4-pack
• Kirkland Signature 5W-20 Full Synthetic Motor Oil 5-quart, 4-pack
• Kirkland Signature 5W-30 Full Synthetic Motor Oil 5-quart, 4-pack
• Kirkland Signature 5-Quart 0W20 & 5W20 Full Synthetic Motor Oil, 4-pack
• Kirkland Signature 5-Quart 0W20 & 5W30 Full Synthetic Motor Oil, 4-pack

Kirkland Signature Full Synthetic Motor Oils are formulated to reduce wear on critical parts and maximizes fuel economy. Our 100% synthetic formulations provides long-lasting engine protection and performance. Helps prevent Low-Speed Pre-Ignition (LSPI) commonly seen in modern, turbocharged direct-injection gasoline engines. Protects against high-temperature shearing to maximize oil life even in long drain intervals (Always consult owner’s manual for recommended drain interval).