Castrol GTX Full Synthetic 5W-30 Motor Oil, 5 Quarts
Castrol® GTX® Full Synthetic 5W-30 motor oil provides maximum protection to help fight the impact of severe conditions that can potentially shorten engine life. It's formulated to provide Superior Protection in 7 Critical Areas including engine wear and sludge control, cleaning away old sludge*** and protecting against new sludge formation better than required by the latest industry standard. ***When tested in engines with high level of sludge
Price and availability captured 2026-08-21 and subject to change. The price shown on Amazon at the time of purchase applies.
0% above the 1-year average. Record low $29.97.
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Specifications, review intelligence and safety
- • 6X better wear protection on critical engine parts than industry standards**
- • 1.3X better sludge protection than industry standards*
- • 3X Stronger against viscosity breakdown than leading full synthetic^
- • Protection for 10,000 miles between oil changes
- • *As measured in Sequence VH sludge test vs. API SP limits
- • **As measured in the latest Sequence IVA test
- • ^ Based on Kurt Orbahn test in 5W-30 grade
- • Meets or exceeds the following specifications: API SQ/SP/SN PLUS/SN
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