Best deal: $13.93 per gallon (37.2% below the median) — Delo 400 XLE Heavy Duty Synblend Diesel Engine Oil 15W-40, 1 Gallon...
Price range: $13.93 – $235.96 per gallon across 46 offers. Median sits at $22.18.
Top brands showing: Castrol Gtx, Castrol Edge, Mobil Full.
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