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Castrol

Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 5 Quarts

  • Based on 8,445 reviews
Condition: New
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$20.97 Why this price?
4th of July Sale · 12% off was $23.72

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Availability: Only 6 left in stock, order soon!
Fulfilled by Amazon
Arrives Sunday, Jul 5
Order within 42 minutes
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Size: 5 Quarts


Features

  • 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 help prevent engine wear | Improved Fuel Economy**
  • Meets or exceeds the following specifications: API SP/SN PLUS/SN/SM | ILSAC GF-6 | Meets Ford WSS-M2C946-B1 | Meets Ford WSS-M2C961-A1 | * Based on API and ACEA volatility specifications | ** In 5W-20, 5W-30 and 10W-30 grades versus industry specifications

Description

Castrol® GTX® High Mileage 5W-30 is specially formulated for vehicles with over 75,000 miles. It's a synthetic blend motor oil that helps extend engine life providing Superior Protection in 7 Critical Areas including corrosion prevention, sludge control, timing and friction wear. It also contains a proprietary additive to protect the emisssion system. Our Phosphorus Replacement Technology reduces harmful phosphorus to protect the catalytic converter and help extend the life of your high mileage vehicle.

SAE J300 Viscosity Grade: 5W-30


Brand: Castrol


Liquid Volume: 160 Fluid Ounces


Package Information: Bottle


Vehicle Service Type: For use in vehicles with over 75,000 miles, Passenger cars, trucks, and SUVs


Container Type: Bottle


Compatible with Vehicle Type: For use in vehicles with over 75,000 miles, Passenger cars, trucks, and SUVs


Viscosity Level: Medium to High


Automotive Fit Type: Universal Fit


SAE J300 Viscosity Grade: 5W-30


Liquid Volume: 160 Fluid Ounces


Brand Name: Castrol


Manufacturer Part Number: 03102C


UPC: 079191231029


Global Trade Identification Number: 29


Manufacturer: Castrol


Size: 5 Quarts


Model Number: 03102


Manufacturer Warranty Description: 12 Months


Item Type Name: Motor Oil


Included Components: Motor Oil


Unit Count: 160.0 Fluid Ounces


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Jul 5

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • great product and price
Size: 5 Quarts
great quality and value castrol is all use
Reviewed in the United States on April 3, 2026 by GARY F ANSTETT
    • Great high mileage oil
Size: 5 Quarts
Great oil.
Reviewed in the United States on June 16, 2026 by VLC
    • Afforable Castrol Oil? great deal
Size: 5 Quarts
Affordable oil and castrol nontheless, im not complaining.
Reviewed in the United States on May 17, 2026 by Cali
    • Castrol is the number one choice for quality oil.
Size: 5 Quarts, Pack of 3
Best quality oil.
Reviewed in the United States on May 24, 2026 by sandman
    • Strong detergent package Motor oil
Size: 5 Quarts
Working excellent so far and it's been recommended to me by online research because this is one of the higher detergent formulations, which for a high mileage hyundai 2.4 gdi engine is a good bet (as it helps with carbon deposits on the fine piston rings which is a problem area in this hyundai design). ... show more
Reviewed in the United States on June 5, 2026 by Michael Scarn
    • Repeat Purchase
Size: 5 Quarts
This is a repeat purchase for me because it works well and keeps the engine running smoothly. Reliable and consistent every time.
Reviewed in the United States on April 7, 2026 by Bored Shopper
    • Great Price for a Great Oil - Recommended!
Size: 5 Quarts
Received a great price for a great oil. But sadly since that great price I have only seen that price available to Prime Members. I have been using Castrol GTX since the 1980's and have always sworn by it being it has never let me down. I have never had an blow a seal, gasket, leak or burn oil while using Castrol GTX. And that is saying a lot as I use to be very hard on my vehicles, and can still be from time to time. One time I busted a hole in my radiator by accident in a parking lot over 15 miles from home. Having no tools or anything with me to fix the problem and being it was late night on a friday I had no choice. But to drive the car home as fast as I could before I lost all the radiator fluid and in turn over heating the car. Well long story short, the car made it home but was long out of antifreeze and the temperature gauge was buried in the red. Fearful for the engine I allowed the vehicle to sit over night to cool off. And the next day she started right up and was as good as always. I have always credited that moment to the fact I had Castrol GTX in the car and in turn is what saved the engine from the excessive heat. As I have not had the same luck other brand names of oil, as I have replaced two engines while using the brand name M. one. Due to my history with and without Castrol GTX motor oil, when I made my recent purchase of a high mileage Chevrolet Blazer 4x4 as a fun, toy around vehicle to haul things with and to play in the snow. Of course I drained the old motor oil out and gave her a fresh batch of Castrol GTX. I did the same for our other car as well. I would easily recommend this product to my friends and family. The oil arrived safely and in a timely manner. I was actually surprised they could ship motor oil as I figured that would be a hazard, but I guess the post office knows better. If you have a Prime Membership, you can almost always find Castrol GTX cheaper on Amazon than at any retail location even with a coupon or on sale. We were not paid nor discounted in any way, shape or form for giving our honest opinion here of this product as a review to assist others. We believe, as a family, it is important to give an honest and accurate review to assist others so they can make good purchasing decisions that can benefit them and their family. And not be lead to cheap, unwanted purchases that are scripted by advertisers to buy their products. We are a family that believes in a minimalist lifestyle while trying to be green as much as possible in all departments of our life. As we care to leave something, anything, of this planet to our grandchildren so they may enjoy it as we have. ... show more
Reviewed in the United States on October 26, 2015 by Roe
    • Best Engine Oil
Size: 5 Quarts
Great price, fast shipping, arrived sealed. Best engine protection by far!!
Reviewed in the United States on March 2, 2026 by Ron@ElserPlumbing

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