castrol gtx full synthetic high mileage motor oil 5w-30, 6 pack, 1 us qt bottles front-facing shot of a 6-pack cardboard carton and a single 1‑quart silver plastic bottle with black cap; carton and bottle labels show Castrol logo, 'GTX Full Synthetic High Mileage' and '5W-30' text, red 6-pack banding and handling icons visible, suitable for vehicles with over 75,000 miles.
Castrol GTX Full Synthetic High Mileage Motor Oil 5W-30, 6 pack, 1 US qt bottles
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GTX Full Synthetic HM

Castrol GTX Full Synthetic High Mileage Motor Oil 5W-30, 6 pack, 1 US qt bottles

|28 ratings

Smart summary

Generated by AI
  • Made For Older Engines

    Made For Older Engines

    Formulated specifically to protect vehicles with over 75,000 miles.
  • Protects Catalytic Converters

    Protects Catalytic Converters

    Phosphorus replacement technology helps extend your emission system life.
  • Fights Engine Leaks

    Fights Engine Leaks

    Provides active protection against oil burn-off and leaks.
  • Includes Six Bottles

    Includes Six Bottles

    Six one-quart bottles give you enough for a full oil change.

Specifications

  • • Phosphorous Replacement Technology helps prevent catalytic converter and emission system failure
  • • 6X better wear protection than the industry standard
  • • Exceptional oil burn-off protection exceeding industry standards*
  • • Protects for up to 10,000 miles between oil changes**
  • • Also suitable for hybrids (0W grades)
  • * Based on API and ACEA volatility specifications
  • **Up to 10,000 miles or 1 year, whichever comes first
  • "Meets or exceeds the following specifications: • API SP/SN PLUS/SN • ILSAC GF-6 • Meets Ford WSS-M2C961-A1 "
Current price is $34.68
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Columbus, 43215
Arrives by Tomorrow
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Order within 10 hr 15 min
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current price $34.68

Castrol GTX Full Synthetic High Mileage Motor Oil 5W-20, 6 pack, 1 US qt bottles

4.7368 out of 5 stars
4.7368 out of 5 Stars. 19 reviews
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About this item

Product details

Castrol GTX Full Synthetic High Mileage is a full synthetic oil engineered specifically for vehicles with over 75,000 miles. It is formulated with Phosphorous Replacement Technology, a proprietary additive that reduces the level of phosphorus, which is harmful to catalytic converters and can shorten emission system life. It provides enhanced protection against wear, leaks, oil burn off and power robbing deposits.
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Key specifications

Specifications

  • • Phosphorous Replacement Technology helps prevent catalytic converter and emission system failure
  • • 6X better wear protection than the industry standard
  • • Exceptional oil burn-off protection exceeding industry standards*
  • • Protects for up to 10,000 miles between oil changes**
  • • Also suitable for hybrids (0W grades)
  • * Based on API and ACEA volatility specifications
  • **Up to 10,000 miles or 1 year, whichever comes first
  • "Meets or exceeds the following specifications: • API SP/SN PLUS/SN • ILSAC GF-6 • Meets Ford WSS-M2C961-A1 "

Member ratings & reviews

4.8 out of 5 stars
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28 ratings8 reviews
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  1. 5 stars93% (26)
  2. 4 stars4% (1)
  3. 3 stars0% (0)
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  5. 1 star4% (1)
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Showing 1-3 of 8 reviews

Aug 19, 2026
Reviewer name: Anthony
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Saving money to save and keep your automobile

If you like to save money and enjoy quality Here is the product Full Synthetic at this price helps

Helpful?0TNEMYLPST7D16624005001
Jul 13, 2026
Reviewer name: NotNow
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

oil for SUV

great price and great item

Helpful?0TNEMYLPST7D16624005001
Apr 20, 2026
Reviewer name: anonymous
5 out of 5 stars
5 out of 5 stars review

Unbeatable value for top tier oil

This to me is a little hidden treasure at Sam's Club. Less than $4 per quart for top tier Full synthetic, with high mileage additives…highest quality oil that meets the latest stringent standards! I can't really find cheaper at any other stores or websites, even for low quality off brand junk…

Helpful?0TNEMYLPST7D16624005001
Current price is $34.68
Prices may vary in club and online
How do you want your item?

Shipping

Free for Plus on eligible orders over $50
Columbus, 43215
Arrives by Tomorrow
.
Order within 10 hr 15 min
Return or replace anytime.

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