Best deal: $0.09 per fluid ounce (55.8% below the median) — Castrol GTX High Mileage 5W-20 Synthetic Blend Motor Oil, 5 Quarts
Price range: $0.09 – $1.84 per fluid ounce across 63 offers. Median sits at $0.21.
Top brands showing: Castrol Gtx, Castrol Edge, Liqui Moly.
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