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Royal Purple 04154 API-Licensed SAE 15W-40 High Performance Synthetic Motor Oil - 1 gal.

4.7 out of 5 stars 110 customer reviews
| 20 answered questions

List Price: $38.99
Price: $29.97 & FREE Shipping on orders over $49. Details
You Save: $9.02 (23%)
In Stock.
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Ships from and sold by Amazon.com.
1 Gallon (128 Ounces)
  • Enter your model number above to make sure this fits.
  • Better wear protection
  • Increased fuel efficiency
  • Better protection of the expensive catalytic emission system
  • Improved compatibility with fuels containing ethanol
  • Superior corrosion protection
See more product details
43 new from $27.95
$29.97 & FREE Shipping on orders over $49. Details In Stock. Ships from and sold by Amazon.com.

Frequently Bought Together

  • Royal Purple 04154 API-Licensed SAE 15W-40 High Performance Synthetic Motor Oil - 1 gal.
  • +
  • Royal Purple 40-780 Oil Filter
  • +
  • Royal Purple 11755 Max-Tane Total Diesel Fuel Performance - 20 oz.
Total price: $62.00
Buy the selected items together


Product Information

Size:1 Gallon (128 Ounces)

Technical Details

Brand Royal Purple
Item Weight 7.6 pounds
Product Dimensions 8.2 x 5 x 8.5 inches
Origin USA
Item model number 04154
Manufacturer Part Number 04154
OEM Part Number 04154

Additional Information

ASIN B000OP6KLY
Customer Reviews
4.7 out of 5 stars 110 customer reviews

4.7 out of 5 stars
Best Sellers Rank #4,230 in Automotive (See top 100)
#86 in Automotive > Oils & Fluids > Oils > Motor Oils
Shipping Weight 7.6 pounds (View shipping rates and policies)
Domestic Shipping Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Shipping Advisory This item must be shipped separately from other items in your order. Additional shipping charges will not apply.
Date First Available July 7, 2004

Warranty & Support

Warranty, Parts:Parts
Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Size: 5 Gallon (640 Ounces) Verified Purchase
I bought this 5 gallon pail thinking I would get two oil changes for my diesel truck which needs 10 quarts per change. I carefully measured the quarts for the first oil change, using only 10 quarts. That should have left 10 quarts for the second change. When I did the next change, I came up 3/4 of a quart short. I called the company and was told they fill the pails by weight, not by volume or liquid measurement. I informed them that I had purchased 5 gallons, regardless of how they fill the pails and that i was now short for a complete oil change. The customer service person apologized and immediately sent me a couple quarts, free of charge. I was advised that they would be looking into the filling process to ensure that 5 gallons was in fact 5 gallons.

It is a great synthetic oil and I am very happy with it. It deserves 5 stars and I would have given them except for the short change....
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Size: 5 Gallon (640 Ounces) Verified Purchase
Used this oil in my Ford 7.3 with a slide in camper on the back. 5,000 miles driven. No loss of oil. Vehicle started and ran well. Toss up between Amsoil and Royal Purple. Make your own choice but Royal Purple does not make an oil filter for the 7.3. Extended drain intervals are good but you have to change your oil filter to extend. K&N were recommended by Royal Purple. Amsoil makes a filter so there is no inconvenience if you are traveling. All in all, it seemed to work well in my truck.
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Size: 1 Gallon (128 Ounces) Verified Purchase
Changed oil all kinds all my life. This is the first one I ever noticed a difference in increased horsepower and lower engine noise. The car just purred like a kitten. Seriously...it made a difference. Gas mileage improved as well... amazing...
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Size: 1 Gallon (128 Ounces) Verified Purchase
The best full synthetic oil for a diesel engine-I've had occasional problems starting my truck cold in subzero temperatures when power for my block heater was unavailable-and Royal Purple got the job done!
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Size: 1 Gallon (128 Ounces) Verified Purchase
I've used this ever since I purchased my Dodge Cummins Diesel in 2003. I've never had any problems with the truck though I think that's a testament to the Cummins and not the oil. I make a point to keep good filters on the truck but have never had the oil oxidize even after 10k miles.
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Size: 1 Gallon (128 Ounces) Verified Purchase
Yes, the jug says for diesel engines on the label, but on the back it says it is also classified as an SN category oil, so you can use it in non diesel engines as well. Ran it in my propane powered 79 Subaru all winter, no problems.
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Size: 1 Gallon (128 Ounces) Verified Purchase
Royal Purple & Mobile 1 are the best you can buy. I like royal purple more because they guarantee more power from a simple oil change when dyno tested or your money back, and they will stand behind this so you get good quality oil.

Runs great in my Ninja 650R
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Size: 1 Gallon (128 Ounces) Verified Purchase
I used Royal Purple synthetic oil in one of my previous vehicles and was very impressed. The engine ran much smoother and was quieter after the change to Royal Purple.
This time I decided to change over to Royal Purple in my 2013 GMC Denali HD with the 6.6L Duramax deisel and I am glad I did. Two weeks after the change to this oil and the Royal Purple 30-2999 oil filter I am getting 2 mpg better gas mileage. My truck is quieter and seems to accelerate quicker and more smoothly also.
I emailed my questions about the oil on the Royal Purple website and an advisor responded to me recommending the proper oil and filter for my truck so my vehicle would remain under warranty.
I will definitely order this oil and filter again.
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