Best High Mileage Synthetic Oil: image
Best Overall

Royal Purple has developed a range of high performance lubricants that significantly outperform other synthetic and mineral based oils. The oil is used to prevent engine deposits and reduce wear on the engine. It also provides extended drain intervals, which helps in preventing LSPI from occurring. Royal Purple’s products have been tested at over 1,500 locations across the world. Notably, it was named one of the best-selling lubricants by Consumer Reports.

Best Value

Royal Purple HMX SAE 5W-30 High-Mileage Synthetic Motor Oil (HMX) is designed to reduce friction and metal-to-metal contact for peak engine performance. The product has been tested on diesel engines, petrol engines, and heavy-duty trucks. It can be used in oil drain intervals of up to 15,000 miles. Notably, it was first introduced in the UK in 2015. The product is also suitable for use in diesel engines with less than 20,000 miles.

Most Discussed

Mobil 1 10W-40 High Mileage Full Synthetic Motor Oil, 5 qt. The oil is designed to provide excellent wear protection, cleaning power and overall performance. It contains no harmful chemicals or additives in the oil. It has been tested on diesel engines and can be used for up to 10,000 miles without changing any oil. This oil will last for at least five years. Notably, it was introduced in 2015.

Best High Mileage Synthetic Oil

Top 10 Best High Mileage Synthetic Oil

1
Why we chose it
  • Superior detergency that helps prevent deposit build up
  • Superior oil burn off protection versus leading conventional oils
  • Advanced additives that help prevent engine wear
  • Seal conditioners help reduce leaks Bottle Color: Green
  • Exceeds ILSAC GF-5, API SN
Castrol 03111C GTX High Mileage 10W-40 Synthetic Blend Motor Oil, 5 Quart: image
96%
customers recommend this product
4.8/ 5
Mileage4.8
Longevity4.8
Value for money4.8
Flavor4.7
Sheerness4.7
Top Pick
2
Why we chose it
  • Fortified with Zinc/Phosphorus anti-wear additive
  • Superior corrosion protection
  • Reduces engine deposits
  • Exceptional oxidation stability
  • Extended drain intervals
  • Increased protection against LSPI
  • Minimizes wear and restores lost engine performance
Royal Purple 11748 HMX SAE 5W-30 High Mileage Synthetic Motor Oil - 5 Qt.: image
98%
customers recommend this product
4.9/ 5
Sheerness5
Mileage4.7
Value for money4.5
Noise level4
Longevity3.8
3

Mobil 1 10W-40 High Mileage Full Synthetic Motor Oil, 5 qt.

780 ratings | 1 offers | 780 Reviews
Price starts from: $58.11
Why we chose it
  • Provides wear protection, cleaning power and overall performance
  • Ideal for passenger cars, SUVs, light vans and trucks
  • High-mileage passenger car motor oil specially designed for older engines
  • Reduces deposits and sludge Contains a seal conditioner to keep seals in working condition and help prevent leaks
  • 5-qt bottle ideal for multiple oil changes Helps older engines last for a longer time
Mobil 1 10W-40 High Mileage Full Synthetic Motor Oil, 5 qt.: image
96%
customers recommend this product
4.8/ 5
Longevity4.7
Mileage4.7
Value for money4.6
Sheerness4.5
4
Why we chose it
  • Exceptional wear protection
  • Exceptional wear protection
  • Havoline High Mileage Motor Oils with Deposit Shield deliver value through:
  • Helping to prevent oil consumption
HAVOLINE 5W20 High Mileage Synthetic Blend, 5 Quarts, 1 Pack (223680474): image
94%
customers recommend this product
4.7/ 5
Value for money4.7
Mileage4.7
Sheerness4.6
5
Why we chose it
  • Excellent for all cars, light trucks and SUV’s
  • Rejuvenates seals and gaskets
  • Helps stop leaks, noise and smoking
  • Contains zinc anti-wear agent ZDDP
  • Use every oil change
STP High Mileage Oil Treatment, Formula for Cars & Truck, Stop Leak, Bottles, 15 Fl Oz, 15604B: image
92%
customers recommend this product
4.6/ 5
Easy to use4.7
Mileage4.6
Value for money4.5
6
Why we chose it
  • Synthetic blend High Mileage 5W-30 engine oil specially formulated for new or late model SUVs, light vans and trucks, and passenger cars
  • Active seal conditioning agents help keep seals pliable to prevent leaks and oil loss
  • Advanced thermal and oxidative stability to help reduce oil burn-off and maximize power output
  • Formulated to exceed industry specifications: ILSAC GF-6A, API SP/SP-Resource Conserving and all previous categories
  • Reduces engine wear and combats sludge and deposits
  • Helps stop leaks and reduces oil consumption in worn engines.
  • Delivers protection for vehicles with over 75,000 miles
  • Case of six 1-quart bottles
Quaker State High Mileage 5W-30 Synthetic Blend Motor Oil (1-Quart, Case of 6): image
88%
customers recommend this product
4.4/ 5
7
Why we chose it
  • CLEANER ENGINES: Synthetics oil doesn’t break down fast and also severe-service engine protection. Because of fast and lubrication efficiency is maintained.
  • DESIGN: 10W-40 motor oil designed to run low viscosity oil for the high mileage racing motor engine fitted with high performance engines. Mostly fitted for UTV and ATV Brands.
  • BETTER ENGINE PROTECTION: This ATV engine oil maintain its viscosity grade, enabling it to offer better engine protection and withstand more extreme engine conditions. It promotes smooth shifting and positive clutch engagement.
  • SUPERIOR TEMPERATURE RESISTANCE: Full synthetic motor oils can safely handle higher operating temperatures 10w40 for engines without breaking down. Synthetic oils are thus recommended for hot climates as well as heavy-duty, turbocharged, or hard-use applications.
  • PERFORMANCE CONSUMPTION: This synthetic oil delivers reserve protection against high heat. All-season performance for year-round use.
MASSIMO MOTOR Premium High Mileage Full Synthetic Oil 10W-40 4 Qt. or 1 Gal for Most UTV and ATV Motorcycle: image
94%
customers recommend this product
4.7/ 5
8
Why we chose it
  • Formulated with robust zinc/phosphorus anti-wear compounds combined with Royal Purple’s proprietary additive technology
  • HMX is chemically enhanced to revitalize hardened seals, reducing oil consumption common in high-mileage engines
  • Specifically designed to minimize wear and restore lost performance in engines with more than 75,000 miles
  • Reduces friction and metal-to-metal contact for peak engine performance
Royal Purple (11749-3PK) HMX SAE 5W-30 High-Mileage Synthetic Motor Oil - 5 Quart, (Case of 3): image
96%
customers recommend this product
4.8/ 5
9
Why we chose it
  • Advanced additives that help prevent engine wear
  • Superior oil burn-off protection versus leading conventional oils
  • Seal conditioners help reduce leaks
  • Superior detergency that helps prevent deposit build-up
  • Exceeds ILSAC GF-5 and API SN standards
Castrol 06440 GTX 5W-30 High Mileage Motor Oil - 1 Quart, (Pack of 6): image
94%
customers recommend this product
4.7/ 5
Longevity5
Value for money5
Mileage5
10
Why we chose it
  • 5W20
  • 5-Quart Bottle
Royal Purple 17518 HMX High Mileage Synthetic Motor Oil 5W20 5-Quart Bottle: image
96%
customers recommend this product
4.8/ 5
Mileage4.8
Value for money4.3
Top Pick
Royal Purple 11748 HMX SAE 5W-30 High Mileage Synthetic Motor Oil - 5 Qt.
Royal Purple located in Porter, Texas, produces a wide range of high performance lubricants for nearly every consumer and industrial application. Royal Purple's founder John Williams was a pioneer in the development of high performance synthetic lubricants and collectively, Royal Purple's formulators have more than 200 years of expertise in developing high performance lubricants. Royal Purple focuses exclusively on developing state-of-the-art lubricants. Unlike companies that primarily focus on fuel and other petroleum byproducts, Royal Purple's sole mission is to develop products that significantly outperform other synthetic and mineral based oils. Royal Purple is very active in the lubricant industry and its related associations.
Ranking the Brands
Castrol: 20.00%
Royal Purple: 30.00%
Mobil 1: 10.00%
HAVOLINE: 10.00%
STP: 10.00%
Quaker State: 10.00%
Massimo: 10.00%

Comparison Table

Сomparison: Castrol 03111C GTX High Mileage 10W-40 Synthetic Blend Motor Oil, 5 Quart: imageСomparison: Royal Purple 11748 HMX SAE 5W-30 High Mileage Synthetic Motor Oil - 5 Qt.: imageСomparison: Mobil 1 10W-40 High Mileage Full Synthetic Motor Oil, 5 qt.: imageСomparison: HAVOLINE 5W20 High Mileage Synthetic Blend, 5 Quarts, 1 Pack (223680474): imageСomparison: STP High Mileage Oil Treatment, Formula for Cars & Truck, Stop Leak, Bottles, 15 Fl Oz, 15604B: imageСomparison: Quaker State High Mileage 5W-30 Synthetic Blend Motor Oil (1-Quart, Case of 6): imageСomparison: MASSIMO MOTOR Premium High Mileage Full Synthetic Oil 10W-40 4 Qt. or 1 Gal for Most UTV and ATV Motorcycle: imageСomparison: Royal Purple (11749-3PK) HMX SAE 5W-30 High-Mileage Synthetic Motor Oil - 5 Quart, (Case of 3): imageСomparison: Castrol 06440 GTX 5W-30 High Mileage Motor Oil - 1 Quart, (Pack of 6): imageСomparison: Royal Purple 17518 HMX High Mileage Synthetic Motor Oil 5W20 5-Quart Bottle: image
Castrol 03111C GTX High Mileage 10W-40 Synthetic Blend Motor Oil, 5 QuartRoyal Purple 11748 HMX SAE 5W-30 High Mileage Synthetic Motor Oil – 5 Qt.Mobil 1 10W-40 High Mileage Full Synthetic Motor Oil, 5 qt.HAVOLINE 5W20 High Mileage Synthetic Blend, 5 Quarts, 1 Pack (223680474)STP High Mileage Oil Treatment, Formula for Cars & Truck, Stop Leak, Bottles, 15 Fl Oz, 15604BQuaker State High Mileage 5W-30 Synthetic Blend Motor Oil (1-Quart, Case of 6)MASSIMO MOTOR Premium High Mileage Full Synthetic Oil 10W-40 4 Qt. or 1 Gal for Most UTV and ATV MotorcycleRoyal Purple (11749-3PK) HMX SAE 5W-30 High-Mileage Synthetic Motor Oil – 5 Quart, (Case of 3)Castrol 06440 GTX 5W-30 High Mileage Motor Oil – 1 Quart, (Pack of 6)Royal Purple 17518 HMX High Mileage Synthetic Motor Oil 5W20 5-Quart Bottle
Package InformationBottleBottleBottleBottleBottleBottleBottleBottleBottle
Viscosity10w-405w-3010w-405w-205w-3010W – 405w-305w-305w-20
BrandCastrolRoyal PurpleMobil 1HAVOLINESTPQuaker StateMassimoRoyal PurpleCastrolRoyal Purple
Liquid Volume160 Fluid Ounces160 Fluid Ounces160 Fluid Ounces160 Fluid Ounces192 Fluid Ounces128 Fluid Ounces640 Fluid Ounces32 Fluid Ounces160 Fluid Ounces
ManufacturerCastrolROYAL PURPLEMobil 1HavolineSTPQuaker StateMASSIMO MOTORRoyal PurpleCastrolRoyal Purple
Item Weight9.58 pounds1.96 pounds9.48 pounds9.38 pounds15.7 ounces12.27 pounds29.8 pounds1.99 pounds9.35 pounds
Product Dimensions11.6 x 9 x 4.5 inches15.38 x 13.75 x 7.81 inches7.97 x 4.48 x 12.75 inches7.22 x 3.65 x 1.85 inches14.38 x 10 x 14 inches8.3 x 4.5 x 12.1 inches
Is Discontinued By ManufacturerNoNoNoNo
Vehicle Service TypeCar, TruckCar, TruckUTVCar, Truck

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