Best deal: $0.09 per fluid ounce (37.6% below the median) — Castrol GTX High Mileage 5W-20 Synthetic Blend Motor Oil, 5 Quarts
Price range: $0.09 – $0.17 per fluid ounce across 10 offers. Median sits at $0.15.
Top brands showing: Castrol Gtx, Valvoline Max Life, Valvoline Advanced.
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