Castrol GTX Full Synthetic 5W-30 Motor Oil, 5 Quarts
Castrol GTX Full Synthetic 5W-30 Motor Oil, 5 Quarts
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Castrol GTX Full Synthetic 5W-30 Motor Oil, 5 Quarts

4.7 stars out of 317 reviews
(4.7)|
317 ratings
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Key item features

  • Superior Wear Protection: 6X better wear protection on critical engine parts than industry standards**
  • Enhanced Sludge Defense: 1.3X better sludge protection than industry standards*
  • Viscosity Stability: 3X stronger against viscosity breakdown than leading full synthetic^
  • Extended Mileage: Protection for 10,000 miles between oil changes
  • Industry Compliance: Meets or exceeds API SP/SN PLUS/SN, ILSAC GF-6, GM dexos1 Gen 3, Ford WSS-M2C946-B1, and Ford WSS-M2C961-A1 specifications
  • Engine Longevity: Reduces engine wear and cleans away old sludge while protecting against new sludge formation
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Current price is $23.9615.0 ¢/fl oz
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4.7 out of 5 stars
stars317 ratings70 reviews
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Pros
  • : Offers similar value to comparable items.
  • : Uses premium materials in its construction.
  • : Suitable for various types of vehicles.
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Showing 1-3 of 70 reviews

Jul 15, 2025
John
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Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

been using Castrol motor oil for 40 years have never had any wear on my engines I recommend it highly so does several of my mechanic friends top notch quality and this price is fantastic

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Sep 22, 2024
Steve
5 out of 5 stars review

Verified Purchase

Great stuff!

Castrol GTX has been my go-to since researching oil brands years ago. I am not sure where the synthetic is produced, but if it reduces our dependence on the biggest oil producing countries and/or is less environmentally harmful, then those are also positives. I put this full synthetic in my 17 year old lawn tractor and in my faithful aging car after using conventional oil for many years, and experienced no problems and no leaks.

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Sep 21, 2024
pepperorig
5 out of 5 stars review

Verified Purchase

Castrol Quality

Castrol has been my go to oil for decades even before synthetic was a thing. My dad used to be a Ford mechanic and he would tell me about how much less sludge was built up in the engines they used Castrol oil in vs the industry standard oil at the time.

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Helpful?37ZMVEF0BLVL5232266931