Castrol GTX 10W-30 Conventional Motor Oil, 5 Quarts
Castrol GTX 10W-30 Conventional Motor Oil, 5 Quarts
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Castrol GTX 10W-30 Conventional Motor Oil, 5 Quarts

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Pack Size:Single
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Key item features

  • Advanced Protection: Provides advanced protection against viscosity and thermal breakdown.
  • Engine Sludge Defense: Offers superior protection against engine sludge, preventing harmful build-up.
  • Premium Quality: Made with premium quality base oils and anti-wear additives to help extend engine life.
  • Oil Consumption: Helps minimize oil consumption for better engine performance.
  • Industry Standards: Meets or exceeds API SP/SN PLUS/SN/SM and ILSAC GF-6 specifications.
  • Proven Reliability: Castrol GTX 10W-30 has been extending engine life for over 50 years.
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Current price is $20.9713.1 ¢/fl oz
Price when purchased online
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Customer ratings & reviews

4.8 out of 5 stars
stars667 ratings160 reviews
How item rating is calculated
5.0
4.7
5.0
5.0
5.0
  1. 5 stars89% (594)
  2. 4 stars6% (40)
  3. 3 stars1% (7)
  4. 2 stars1% (5)
  5. 1 star3% (21)

Reviews summary

Pros

  • : Made to last with a strong build.
  • : Offers similar prices to other retailers.
  • : Maintains engine cleanliness and minimizes wear.
  • : Effective for high mileage engines.
  • : Compatible with various vehicle makes and models.
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Showing 1-3 of 160 reviews

Dec 21, 2025
Patti
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Castrol provides good quality for our vehicle care, the larger size eliminates a bunch of small containers to be recycled. We are a long term happy customers.

Helpful?662J7EF77TS65262767011
Oct 10, 2025
Angelica
Top Reviewer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Quality motor oil

It's kind of hard to find conventional oil for older cars these days so being able to buy this from Walmart was great!

Helpful?662J7EF77TS65262767011
Feb 11, 2026
William
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Keep on trucking

I have used conventional Castro oil in my 1999 and 2003 Silverados and have about 250000 on each with no oil related failures.

Helpful?662J7EF77TS65262767011