Yes, Costco does sell car oil, primarily under its highly regarded Kirkland Signature brand. They offer full synthetic and synthetic blend motor oils that meet or exceed industry standards (like API SP) at a significantly lower price than many auto parts stores. You can typically find popular viscosities such as 5W-30 and 5W-20. However, Costco's selection is limited compared to specialized retailers, often stocking only a few high-demand types. It's exclusively an in-warehouse item, not available for online purchase, and availability can vary by location.
The primary draw is the value. Costco sells motor oil in bulk packs, usually two 5-quart jugs, which is enough for most oil changes with some left over. This bulk pricing model makes it an excellent choice for households with multiple vehicles or for those who perform their own oil changes regularly.
| Feature | Kirkland Signature Full Synthetic 5W-30 | Mobil 1 Full Synthetic 5W-30 (for comparison) |
|---|
| Viscosity Grades | 5W-30, 5W-20 | 0W-20, 5W-30, 10W-30, etc. |
| API Certification | API SP | API SP |
| Quantity per Pack | 2 x 5-Quart Jugs | Typically 1 x 5-Quart Jug |
| Approx. Price per Quart | ~$3.50 - $4.00 | ~$7.00 - $9.00 |
| Deal Frequency | Regularly stocked, occasional instant savings | Frequent sales & rebates at auto parts stores |
Before making a trip, it's wise to call your local warehouse to confirm they have the weight your vehicle's manufacturer recommends. Your owner's manual will specify the correct viscosity and the required performance standard. If you need a specific niche product, a high-mileage formula, or just a single bottle, a traditional auto parts store will offer more flexibility, though at a higher per-quart cost.
