Castrol GTX High Mileage 10W-40 Synthetic Blend Motor Oil, 1 Quart
Castrol GTX High Mileage 10W-40 Synthetic Blend Motor Oil, 1 Quart
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Castrol GTX High Mileage 10W-40 Synthetic Blend Motor Oil, 1 Quart

Castrol GTX High Mileage 10W-40 Synthetic Blend Motor Oil, 1 QuartCastrol GTX High Mileage 10W 40 Synthetic Blend Motor Oil 1 Quart
Pack Size:Single
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Key item features

  • Mileage Formulation: Specifically formulated as a synthetic blend motor oil for vehicles exceeding 75,000 miles, aiming to extend engine life.
  • Emission Protection: Features Phosphorus Replacement Technology to reduce harmful phosphorus, protecting the catalytic converter and extending the emission system's life.
  • Sludge Defense: Provides superior dispersancy to actively fight against sludge buildup within the engine.
  • Leak Reduction: Includes seal conditioners designed to help reduce and prevent oil leaks.
  • Wear Minimization: Contains advanced additives that work to minimize engine wear and offer superior protection in seven critical areas, including corrosion and timing.
  • Burn-Off Control: Offers exceptional oil burn-off protection, surpassing industry standards for volatility.
  • Industry Compliance: Meets or exceeds API SP/SN PLUS/SN and ILSAC GF-6 industry specifications.
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Current price is $5.9618.6 ¢/fl oz
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Customer ratings & reviews

4.8 out of 5 stars
stars610 ratings276 reviews
How item rating is calculated
  1. 5 stars90% (549)
  2. 4 stars7% (40)
  3. 3 stars1% (7)
  4. 2 stars1% (4)
  5. 1 star2% (10)
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Showing 1-3 of 276 reviews

Nov 16, 2025
WalmartCustomer
5 out of 5 stars review

Verified Purchase

Walmart.com had product needed and was easy to maneuver website. Price was much lower than competitors.

Incentivized Review
Helpful?be3df2c0-0b0c-11f1-8e30-63e7131886fb17300843
Jun 17, 2025
Okaylupe
Top Reviewer
5 out of 5 stars review

Verified Purchase

Great upgrade to older engine oil

Better alternative for an older engine with higher mileage that requires 5w-30 this one is thicker and keeps the engine running smooth after so many miles.

Helpful?be3df2c0-0b0c-11f1-8e30-63e7131886fb17300843
Feb 8, 2026
Cinthia
5 out of 5 stars review

Verified Purchase

Walmart should have more of these in stock

Helpful?be3df2c0-0b0c-11f1-8e30-63e7131886fb17300843