Royal Purple Street Synthetic Motor Oil - SAE 5w20, Quart Bottle, Pack of 12
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By John Lo (saint paul, mn)
Royal Purple is expensive but it is worth every penny of it. I bought a brand new 2008 suzuki sx4 and had my oil changed every 3500 miles at the suzuki dealer but I was not satisfied with the performance the crappy dealership oil was giving me so I took matters into my own hands. At 16,500 miles, I decided not to go back to the dealer for my regular oil change instead I switched to changing my own engine and I began using royal purple oil. Now with the car at 30,000 miles I can say there has been a major difference in my engine's performance especially the gas mileage. With the dealer oil, I noticed that my car became sluggish at 2,500 miles and my gas mileage suffered greatly from it. Since changing to royal purple motor oil, the sluggishness has disappeared, the gas mileage has improved, and I don't have to worry about changing my oil every 3500 miles, I usually do it at 7500 miles(changing the oil filter at 3700 miles). If you havent tried royal purple do so already, it is pricey but once you calculate the price of changing oil at 3000 miles to changing your oil once every 7500-10,000 miles you are actually saving yourself money.
By Michael R. Wilson (Dalzell, SC United States)
Best oil out there! Want better gas mileage and higher performance? Use Royal Purple and see for yourself. I use the 5w20 in a 2005 Dodge Ram 1500 with the 5.7 HEMI. It cost more because your getting more in every quart. Try it and like me you won't use any thing else in your car or truck.
See Facts that I researched before I started using Royal Purple. Do the research or try it for youself before you lend judgements on items or comments by those who have. Of course, buyer always beware.
Research:
The racing markets associate outstanding quality and superior performance with Royal Purple®. This reputation has been earned through Royal Purple's® relentless pursuit of lubrication excellence.
Royal Purple® formulates the most advanced lubricants available on the market today. Synthetic oils enable Royal Purple® to make superior lubricants; however, it is Royal Purple's noncorrosive, proprietary Synerlec® additive technology that provides Royal Purple® lubricants with their amazing performance advantages. Synerlec® additive technology truly is beyond synthetic.
Royal Purple's® Synerlec® additive technology forms a tough, ionic, chemical film on all lubricated parts greatly enhancing the oil's performance.
Royal Purple® manufactures a wide range of high performance, synthetic lubricants for every use from top fuel dragsters to the family car, motorcycles, trucks, RVs and boats. Its industry experts are consistently developing products that outperform leading mineral- and synthetic-based lubricants in performance and protection.
Numerous independent tests document performance gains by using Royal Purple lubricants. The sampling of results below are categorized by the performance gains reported.
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Tests Documenting Horsepower (hp) and / or Torque Gains:
Just In! - Drag Sport magazine: hp gain of 2.5%
D & D Performance Enterprises: hp gain of 1.2%, torque gain of 1.3%
Diesel World magazine: hp gain of 3.2%
GM High-Tech Performance magazine: hp gain of 10+, torque gain of nearly 12 ft-lbs
Oklahoma State University: diesel engine gain of 2.8% hp
Sport Truck magazine: hp gain of 5%, torque gain of 12 lb-ft
Tests Documenting Fuel Economy Improvements:
Diesel World: fuel economy gain of 10% or 1.7 mpg
fordtruckworld.com: fuel economy gain of 7.4% or 1.1 mpg
North Carolina State University: gasoline engine fuel economy gain of 2.5% to 5.0% and diesel engine fuel economy gain of 1.5% to 3.7%
Oklahoma State University: fuel economy gain of 4.4%
Test Documenting Reduced Engine Wear:
Insight Services: wear reduced by 80% and oil change intervals extended from once per race to every 3 races
Tests Documenting Reduced Engine Heat:
Longview Inspection: Max-Cycle reduced operating temperatures 24°F - 44°F
Tests Documenting Reduced Emissions:
North Carolina State University: diesel engine emissions reduced 17%-34% and gasoline engine emissions reduced 29% (city) and 62% (highway)
Oklahoma State University: diesel engine emissions reduced 22%
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I should have included this in the first review.
By Terrance L. Silvernail (Fort Myers, FL)
I have been using Royal Purple products in my race car and my daily driver for years. Their product stands up!
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