All 19 listings, cheapest per fl oz first
| Item | Size | Price | Per fl oz | |
|---|---|---|---|---|
| Castrol GTX 5W-30 Synthetic Blend Motor Oil, 5 Quarts | 160 fl oz | $20.97 | $0.13 | Amazon → |
| Valvoline MaxLife High Mileage 5W-30 Synthetic Blend Motor Oil 5 Quart | 160 fl oz | $22.97 | $0.14 | Amazon → |
| Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 5 Quarts | 160 fl oz | $23.97 | $0.15 | Amazon → |
| Pennzoil High Mileage 5W-30 Motor Oil, 1 Quart (6 Pack) | 192 fl oz | $32.48 | $0.17 | Amazon → |
| Pennzoil 5W-30 Motor Oil, 1 Quart | 32 fl oz | $5.99 | $0.19 | Amazon → |
| Castrol EDGE High Mileage 5W-30 Advanced Full Synthetic Motor Oil, 5 Quarts | 160 fl oz | $29.97 | $0.19 | Amazon → |
| Mobil 1 Advanced Full Synthetic Motor Oil 5W-30, 5 Quart | 160 fl oz | $31.97 | $0.20 | Amazon → |
| Mobil 1 High Mileage Full Synthetic Motor Oil 5W-30, 5 Quart | 160 fl oz | $31.97 | $0.20 | Amazon → |
| Valvoline Advanced Full Synthetic SAE 5W-30 Motor Oil 5 QT | 160 fl oz | $31.97 | $0.20 | Amazon → |
| Castrol EDGE 5W-30 Advanced Full Synthetic Motor Oil, 5 Quarts | 160 fl oz | $31.97 | $0.20 | Amazon → |
| Valvoline MaxLife High Mileage Full Synthetic 5W-30 Motor Oil 5 Quart | 160 fl oz | $31.97 | $0.20 | Amazon → |
| Castrol EDGE Extended Performance 5W-30 Advanced Full Syn Motor Oil, 5 Qt | 160 fl oz | $33.97 | $0.21 | Amazon → |
| Mobil 1 Extended Performance High Mileage Full Synthetic Oil 5W-30, 5 Quart | 160 fl oz | $35.97 | $0.22 | Amazon → |
| Valvoline Restore & Protect Full Synthetic 5W-30 Motor Oil 5 Quart | 160 fl oz | $35.97 | $0.22 | Amazon → |
| Mobil 1 Extended Performance Full Synthetic Motor Oil 5W-30, 5 Quart | 160 fl oz | $35.97 | $0.22 | Amazon → |
| Mobil 1 Extended Performance Full Synthetic Motor Oil 5W-30, 1 QT (6 Pack) | 192 fl oz | $46.98 | $0.24 | Amazon → |
| Pennzoil Ultra Platinum Full Synthetic 5W-30 Motor Oil, 5 Quart (3 Pack) | 480 fl oz | $120 | $0.25 | Amazon → |
| Mercedes Benz 5W30 Synthetic Oil 229.52-1 case of 6 quarts | 192 fl oz | $110 | $0.57 | Amazon → |
| Mobil Full Synthetic Motor Oil 5W-30, 1 Quart (Pack of 6) | 32 fl oz | $39.99 | $1.25 | Amazon → |
Prices as of 2026-10-24 19:03:14 UTC: Amazon item price (Amazon's own, else its lowest new offer) before shipping and tax, via Keepa. Size comes from Amazon's unit count or the listing title; check the listing before buying. Product prices and availability are accurate as of the date/time indicated and are subject to change. As an Amazon Associate, Sharpest earns from qualifying purchases.
More auto
- Car wash soap $0.14/fl oz
- Motor oil 0W-20 $0.19/fl oz
- Windshield washer fluid $0.06/fl oz