A brand of synthetic motor oil from ExxonMobil
Costco has restricted members to two 5-quart packs of Kirkland Signature synthetic motor oil per week and is limiting Mobil 1 1-quart six-packs to five units per membership, with prices around $58 and $44 respectively. The move comes as Brent crude climbs above $109 and Middle East tensions disrupt oil supply, pushing up costs for lubricants and fuel.