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Castrol GTX High Mileage 5W-20 Synthetic Blend Motor Oil, 5 Quarts
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Key item features
- Emission Protection: Phosphorus Replacement Technology helps extend emission system life
- Sludge Defense: Superior dispersancy that fights sludge build up
- Burn-Off Guard: Exceptional oil burn-off protection exceeding industry standards*
- Leak Reduction: Seal conditioners to help reduce leaks
- Wear Minimization: Advanced additives that minimize engine wear
- Fuel Efficiency: Improved fuel economy**
- Industry Compliance: Meets or exceeds API SP/SN PLUS/SN/SM, ILSAC GF-6, Ford WSS-M2C945-B1, and Ford WSS-M2C960-A1 specifications
Generated by AI
Specs
- Motor oil viscosity5W - 20
- Motor oil typeSynthetic Blend Motor Oils
- Rec. useAutomotive
- Volume capacity5 qt
- Diesel fuel compatibleN
- Vehicle typeCar
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About this item
Product details
Castrol® GTX® High Mileage 5W-20 is the #1 consumer high-mileage brand of motor oil. It's a synthetic blend engine oil that helps extend the life of engines by protecting against sludge, wear and burn-off. Engineered with Phosphorous Replacement Technology, it also protects emission systems by replacing some of the phosphorous that can damage catalytic converters.
- Phosphorus Replacement Technology helps extend emission system life
- Superior dispersancy that fights sludge build up
- Exceptional oil burn-off protection exceeding industry standards*
- Seal conditioners to help reduce leaks
- Advanced additives that minimize engine wear
- Improved fuel economy**
- * Based on API and ACEA volatility specifications
- ** In 5W-20, 5W-30 and 10W-30 grades versus industry specifications
- Meets or exceeds the following specifications
- API SP/SN PLUS/SN/SM
- ILSAC GF-6
- Meets Ford WSS-M2C945-B1
- Meets Ford WSS-M2C960-A1
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.
Specifications
Motor oil viscosity
5W - 20
Motor oil type
Synthetic Blend Motor Oils
Brand
Castrol
Rec. use
Automotive
Directions
Instructions
To learn more about Castrols products and helpful tips, please visit www.castrol.com/us.
Warranty
Warranty information
See product for details
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Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Warranty url
Warnings
WARNING: Prop65WARNING: This product can expose you to chemicals which is(are) known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.govState Chemical Disclosure
Prop65WARNING: This product can expose you to chemicals which is(are) known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov
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Customer ratings & reviews
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Showing 1-3 of 220 reviews
Jan 6, 2017
JCTR
5 out of 5 stars review
Verified Purchase
Castrol GTX HM Synthetic Blend
I have a 20-year old Olds Cutlass Supreme and the engine is still like new based on consistent oil changes with Castrol products. Now that she's a high-miler I have been using the HM Synthetic Blend product for the past couple of years. I change it every 5K miles and use the good Fram TG filter and the oil appears clean even when it's time to change it.
Helpful?68a33d70-d40c-11f0-ac61-41720b250fb934997879
Aug 29, 2025
WalmartCustomer
5 out of 5 stars review
Verified Purchase
The price was a little more than in another store, but it rewards the avoidance of going to the store.
Incentivized Review
Helpful?68a33d70-d40c-11f0-ac61-41720b250fb934997879
Apr 28, 2025
Texan
5 out of 5 stars review
Verified Purchase
Castrol High Mileage oil
My 2003 Honda has only known Castrol motor oil. Now it has 178K miles on it and still going strong. So I continue to buy Castrol motor oil.
Helpful?68a33d70-d40c-11f0-ac61-41720b250fb934997879
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