

🛢️ Keep your high-mileage ride young, efficient, and unstoppable!
Castrol GTX High Mileage 5W-20 Synthetic Blend Motor Oil is engineered for vehicles with over 75,000 miles, combining advanced additives and Phosphorus Replacement Technology to protect engine components, reduce sludge, prevent leaks, and improve fuel economy. Trusted by millions, it meets or exceeds top industry standards including API SP and ILSAC GF-6, ensuring superior performance and extended engine life.










| ASIN | B00JGQLSAK |
| Best Sellers Rank | #2,617 in Automotive ( See Top 100 in Automotive ) #56 in Motor Oils |
| Brand Name | Castrol |
| Compatible with Vehicle Type | For use in vehicles with over 75,000 miles, Passenger cars, trucks, and SUVs |
| Container Type | Bottle |
| Customer Reviews | 4.8 4.8 out of 5 stars (3,228) |
| Global Trade Identification Number | 00079191331002 |
| Included Components | Motor Oil |
| Item Type Name | Motor Oil |
| Liquid Volume | 160 Fluid Ounces |
| Manufacturer | Castrol |
| Manufacturer Part Number | 03100C-3PK |
| Manufacturer Warranty Description | 12 Months |
| UPC | 079191031001 079191331002 |
| Unit Count | 480.0 Fluid Ounces |
| Viscosity | 5W-20 SAE Grade |
S**Y
Just enough
I use this for an older Subaru of mine that has high mileage. It uses some oil and this lasts me between oil changes. The container isn’t too big so it’s easy to use. It’s perfect for an oil change too. It’s saves money compared to buying individual quarts.
J**Y
Good quality
Good price
R**N
Castro 5w-20 motor oil 6 qts
Good price Good quality
M**S
*Whispers* ... it's oil.
I'm scared to review this product since oil is popular these days, and I don't feel like my garage getting robbed. It's oil, it works good, have had no issues, mine was a good price. Yours? I can't say the same. It's not the products fault though, I'd get it again, if I didn't need to mortgage my house to do so.
D**Y
buen producto
If I were you (and based on you being in Davie, Florida — so warm climate, somewhat mild stress conditions unless you tow or drive aggressively), and your car is older / higher mileage and recommends 5W-20, I’d say yes, the Castrol GTX High Mileage 5W-20 Synthetic Blend is a solid choice. It ticks the right specs, is appropriate for high mileage, and offers good features for the price. If, however, your car is newer, low mileage, or has a manufacturer requirement for full synthetic, then I’d lean toward going directly to a full synthetic oil instead.
B**S
Good oil... with free shipping why go to the auto parts store?
It's good oil, and easier than going to the auto parts store, cheaper also
R**T
Great.
Great oil.
N**W
Keeps My Civic Running Smoothly
I’ve been using Castrol High Mileage oil in my 2011 Honda Civic for years, and it’s made a noticeable difference. The engine runs smoother, idle is quieter, and I’ve noticed less oil consumption over long drives. It’s easy to pour, has a clean feel, and gives me extra confidence that my older engine is protected. Definitely worth it for anyone looking to extend the life of their higher-mileage car. Highly recommend!
Trustpilot
2 weeks ago
1 week ago