Best deal: $0.09 per fluid ounce (42.4% below the median) — Castrol GTX High Mileage 10W-30 Synthetic Blend Motor Oil, 5 Quarts
Price range: $0.09 – $2.19 per fluid ounce across 10 offers. Median sits at $0.16.
Top brands showing: Valvoline Max Life, Castrol Gtx, Mobil Advanced.
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