Castrol GTX Full Synthetic 5W-20 Motor Oil, 5 Quarts
Castrol GTX Full Synthetic 5W-20 Motor Oil, 5 Quarts
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Castrol GTX Full Synthetic 5W-20 Motor Oil, 5 Quarts

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Pack Size:Single
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Key item features

  • Enhanced Protection: Offers 6X better wear protection on critical engine parts and 1.3X better sludge protection compared to industry standards.
  • Viscosity Strength: Provides 3X stronger resistance against viscosity breakdown than leading full synthetic oils.
  • Extended Intervals: Designed to protect engines for up to 10,000 miles between oil changes.
  • Sludge Defense: Formulated to clean away existing sludge and prevent new sludge formation more effectively than industry standards.
  • Industry Compliant: Meets or exceeds API SQ/SP/SN PLUS/SN, ILSAC GF-7, GM dexos1 Gen 3, and Ford WSS-M2C947-B1/WSS-M2C962-A1 specifications.
  • Severe Condition: Provides maximum protection to combat the impact of severe conditions that can shorten engine life.
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Current price is $23.9615.0 ¢/fl oz
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Customer ratings & reviews

4.7 out of 5 stars
stars202 ratings46 reviews
How item rating is calculated
  1. 5 stars86% (174)
  2. 4 stars7% (15)
  3. 3 stars2% (5)
  4. 2 stars1% (3)
  5. 1 star2% (5)
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Showing 1-3 of 46 reviews

Jun 5, 2026
anonymous
Top Reviewer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Always a Great product. As long as you keep it changed on top, you don't have to worry about sludge or build up. Usually as clean when changing as the new stuff is. It has never failed me

Helpful?6OW3YKIO9GF45232266930
Mar 31, 2025
WalmartCustomer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Sometimes, the stores do not have this product, but I always can get it delivered with Walmart within a day or two.

Incentivized Review
Helpful?6OW3YKIO9GF45232266930
Aug 29, 2025
Brewster
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Consistent Quality

Castrol has a good reputation, and I have used their products for years. I have never had any issues with them, and I will continue using them.

Helpful?6OW3YKIO9GF45232266930