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

4.8 stars out of 2017 reviews
(4.8)|
2,017 ratings
Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 5 QuartsCastrol GTX High Mileage 5W 30 Synthetic Blend Motor Oil 5 Quarts6 pack Castrol GTX High Mileage 5W 30 Synthetic Blend Motor Oil 5 Quarts4 pack Castrol GTX High Mileage 5W 30 Synthetic Blend Motor Oil 5 Quarts2 pack Castrol GTX High Mileage 5W 30 Synthetic Blend Motor Oil 5 Quarts5 pack Castrol GTX High Mileage 5W 30 Synthetic Blend Motor Oil 5 Quarts3 pack Castrol GTX High Mileage 5W 30 Synthetic Blend Motor Oil 5 Quarts
Pack Size:Single
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Key item features

  • Engine Longevity: Formulated as a synthetic blend motor oil, it is specifically designed for vehicles with over 75,000 miles, helping to extend overall engine life.
  • Sludge Defense: Features superior dispersancy to actively combat and prevent the buildup of harmful engine sludge.
  • Leak Reduction: Contains specialized seal conditioners that work to reduce and prevent oil leaks in high-mileage engines.
  • Emission Protection: Utilizes Phosphorus Replacement Technology to reduce harmful phosphorus, protecting the catalytic converter and extending emission system life.
  • Wear Minimization: Incorporates advanced additives engineered to minimize engine wear across critical components.
  • Fuel Efficiency: Offers improved fuel economy in 5W-20, 5W-30, and 10W-30 grades, exceeding industry specifications.
  • Industry Compliance: Meets or exceeds multiple industry specifications including API SP/SN PLUS/SN/SM, ILSAC GF-6, Ford WSS-M2C946-B1, and Ford WSS-M2C961-A1.
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Current price is $20.9713.1 ¢/fl oz
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Comparison Overview:
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Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 5 Quarts
Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 5 Quarts
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Castrol GTX High Mileage 10W-30 Synthetic Blend Motor Oil, 1 Quart
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Comparison Chart:
Motor oil viscosity5W - 30Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 5 Quarts10W - 40Castrol GTX High Mileage 10W-40 Synthetic Blend Motor Oil, 5 Quarts5W - 30Castrol GTX 5W-30 Synthetic Blend Motor Oil, 5 Quarts5W - 20Valvoline MaxLife High Mileage 5W-20 Synthetic Blend Motor Oil 5 Quart5W - 30Castrol EDGE Euro 5W-30 A3/B4 European Advanced Full Synthetic Motor Oil, 1 Quart10W - 30Castrol GTX High Mileage 10W-30 Synthetic Blend Motor Oil, 1 Quart
Motor oil typeSynthetic Blend Motor OilsCastrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 5 QuartsSynthetic Blend Motor OilsCastrol GTX High Mileage 10W-40 Synthetic Blend Motor Oil, 5 QuartsSynthetic Blend Motor OilsCastrol GTX 5W-30 Synthetic Blend Motor Oil, 5 QuartsSynthetic Blend Motor OilsValvoline MaxLife High Mileage 5W-20 Synthetic Blend Motor Oil 5 QuartFull Synthetic Motor OilsCastrol EDGE Euro 5W-30 A3/B4 European Advanced Full Synthetic Motor Oil, 1 QuartSynthetic Blend Motor OilsCastrol GTX High Mileage 10W-30 Synthetic Blend Motor Oil, 1 Quart
Rec. useAutomotiveCastrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 5 QuartsAutomotiveCastrol GTX High Mileage 10W-40 Synthetic Blend Motor Oil, 5 QuartsAutomotiveCastrol GTX 5W-30 Synthetic Blend Motor Oil, 5 QuartsAutomotiveValvoline MaxLife High Mileage 5W-20 Synthetic Blend Motor Oil 5 QuartAutomotiveCastrol EDGE Euro 5W-30 A3/B4 European Advanced Full Synthetic Motor Oil, 1 QuartAutomotiveCastrol GTX High Mileage 10W-30 Synthetic Blend Motor Oil, 1 Quart
Volume capacity5 qtCastrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 5 Quarts5 qtCastrol GTX High Mileage 10W-40 Synthetic Blend Motor Oil, 5 Quarts5 qtCastrol GTX 5W-30 Synthetic Blend Motor Oil, 5 Quarts5 qtValvoline MaxLife High Mileage 5W-20 Synthetic Blend Motor Oil 5 Quart1 qtCastrol EDGE Euro 5W-30 A3/B4 European Advanced Full Synthetic Motor Oil, 1 Quart1 qtCastrol GTX High Mileage 10W-30 Synthetic Blend Motor Oil, 1 Quart
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Customer ratings & reviews

4.8 out of 5 stars
stars2,017 ratings461 reviews
How item rating is calculated
  1. 5 stars88% (1,783)
  2. 4 stars7% (135)
  3. 3 stars2% (35)
  4. 2 stars0% (10)
  5. 1 star3% (54)

Reviews summary

Pros
  • : Offers a lower price point compared to others.
  • : Made with premium materials for excellent performance.
  • : Runs smoothly with high mileage.
  • : Operates quietly with minimal engine noise.
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Showing 1-3 of 461 reviews

Dec 4, 2025
Drew
Item details
Size: 160
5 out of 5 stars review

Verified Purchase

Best Oil For High Milage Engines

I bought my 01 Suburban in 2011 with 150,000ish miles on it. Since I've owed the truck this is the only oil I've but in it. I'll be doing another oil change this weekend and wouldn't think of putting in anything else inside Betsy Ross's engine. The ole' girl is at 312,526 miles as of today and still running strong.

Helpful?fd7ea6b0-d40b-11f0-ac61-41720b250fb95262767012
Dec 29, 2025
D
Top Reviewer
Item details
Size: 160
5 out of 5 stars review

Verified Purchase

Great quality at the best price around.

There's no better quality than Castrol oil. I've used it for decades and its never let me down. Foreign or domestic vehicles are both well protected with Castrol oil.

Helpful?fd7ea6b0-d40b-11f0-ac61-41720b250fb95262767012
Jan 7, 2026
spaetzle
Top Reviewer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Noticed a Decrease in Engine Noise with this Oil

I bought this oil for my 2017 Kia Sportage that has 80,000 miles on it. The oil appears to give my car a smooth operation and I have noticed a decrease in engine noise. The bottle is quite large so I use a funnel to avoid any spillage.

Helpful?fd7ea6b0-d40b-11f0-ac61-41720b250fb95262767012