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Royal Purple Street Synthetic Motor Oil - SAE 5w20, Quart Bottle, Pack of 12 | 
| Brand: Royal Purple
Category: Automotive Parts and Accessories
List Price: $146.28
Buy New: $84.99
as of 9/6/2010 09:11 CDT details
You Save: $61.29 (42%)
New (5) from $84.99
Seller: The Auto Alley
Rating:  11 reviews
Sales Rank: 2535
Media: Automotive
Shipping Weight (lbs): 24.2
Dimensions (in): 13 x 9.8 x 9.4
MPN: 12520
Model: 12520
UPC: 641330125201
EAN: 0641330125201
ASIN: B000BO0532
Availability: Usually ships in 1-2 business days
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| Editorial Reviews:
Product Description
Royal Purple 12520
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| Customer Reviews:
Showing reviews 1-5 of 11
Royal Purple....Amazing September 2, 2010
JC
I used to use Pennzoil Ultra Advance Synthetic Motor oil and Mobil 1. I switch on and off between them. Both of the oils Work Perfectly fine. Car runs great and then I started to hear about royal purple, How people tell its an amazing oil and works wonders. I thought Synthetic oil is as good as it gets. Until I tried royal purple...this is THE best oil i've tried yet so far, I haven't tried Ams oil nor Red Line. But I'm sticking to Royal Purple, Great Idles, More Torque and Power to the wheels, Engine Overall Performs Excellent. An Oil that Out Performs, Royal Purple. Go Buy it!
Synthetic Oil July 28, 2010
Inspector Nash Bridges (Baghdad by the Bay)
Synthetic oil is a lubricant consisting of chemical compounds which are artificially made (synthesized) using chemically modified petroleum components rather than whole crude oil. Synthetic oil is used as a substitute for lubricant refined from petroleum when operating in extremes of temperature, because it generally provides superior mechanical and chemical properties than those found in traditional mineral oils.
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In the 1970s, typical cars took 10W-40 oil which was used for a duration of 2,000 mi or less[citation needed]. In the 1980s, to improve fuel economy and engine performance 5W-30 oil was introduced which was then used for a duration of 3,000 miles. A modern typical application would use 5W-20 viscosity oil or synthetic oils for durations greater than 7,500 miles.
From the early 1980s most oil change shops have been recommending an oil change every 3,000 miles. During the following decades engine technology and oil technology have advanced requiring less frequent oil changes under normal driving conditions.
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Synthetic motor oils are man made oils from the following classes of lubricants:
*Polyalphaolefin (PAO) = American Petroleum Institute (API) Group IV base oil
*Synthetic esters, etc = API Group V base oils (non-PAO synthetics, including diesters, polyolesters, alklylated napthlenes, alkyklated benzenes, etc.)
*Hydrocracked/Hydroisomerized = API Group III base oils. Chevron, Shell, and other petrochemical companies developed processes involving catalytic conversion of feed stocks under pressure in the presence of hydrogen into high quality mineral lubricating oil. In 2005, production of GTL (gas-to-liquid) Group III base stocks began, the best of which perform much like polyalphaolefin. Group III base stocks are considered synthetic motor oil only in the United States;[13] elsewhere they are not allowed to be marketed as "synthetic".
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The technical advantages of synthetic motor oils include:
*Measurably better low and high temperature viscosity performance
*Better chemical & shear stability
*Decreased evaporative loss
*Resistance to oxidation, thermal breakdown and oil sludge problems
*Extended drain intervals with the environmental benefit of less oil waste.
*Improved fuel economy in certain engine configurations.
*Better lubrication on cold starts
*Longer engine life
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The disadvantages of synthetic motor oils include:
*The lower friction may make them unsuitable for break-in (i.e. the initial run-in period of the vehicle) where friction is desirable to cause wear. Improved engine part machining has made break-in less critical than it once was, though. Many modern cars now come with synthetic oil as a factory fill.
*Potential decomposition problems in certain chemical environments (industrial use dominantly)
*Potential stress cracking of plastic components like POM (polyoxymethylene) in the presence of PAOs (polyalphaolefins).
*Synthetics do not hold lead in suspension as well as mineral oil, thus caution is advised when the engine is run on leaded fuel.[citation needed] As an example, leaded fuel is still commonly used in aviation (avgas).
*In July 1996, Consumer Reports published the results of a two year motor oil test involving a fleet of 75 New York taxi cabs and found no noticeable advantage of synthetic oil over regular mineral oil. In their article, they noted that "Big-city cabs don't see many cold start-ups or long periods of high speed driving in extreme heat. But our test results relate to the most common type of severe service -- stop-and-go city driving." According to their study, synthetic oil is "worth considering for extreme driving conditions: high ambient temperatures and high engine load, or very cold temperatures."
*Synthetic oils are not recommended in automotive rotary engines
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It works for us! June 28, 2010
C. Thompson (Louisiana)
When Katrina drowned our Dodge at almost 200,000 miles, Mobil 1 had left a clean, NO oil use, motor. The replacement Mazda asked for 5-20 which was not available from M-1 so we went with Royal Purple. So far, 70K miles, we are very satisfied. Will check in each 100 K miles. Hope we outlast the MPV so we can report on it's terminal state.
Carl
Royally Good June 18, 2010
deven
I love motor oil and I love experiment with it too. I have a 2009 Acura TL and I only have 5000 miles. I didn't know how long the factory fill oil was sitting in my car when I bought it so after 1000 miles I changed it out to Red Line 5w20 because it is simply the best oil(polyol ester oil) when it comes to its additive pack(ZDDP-Zincdithiophosphate and Molybdneum(friction modifier). Now after reaching 5000 miles I decided to change my oil and decided to try Royal Purple 5w20. After researching the web and reading quite a bit on an oil forum, I was a sceptic because it wasn't received well. I heard everything from it shears easily and doesn't hold its viscosity to the fact that many used oil analysis(UOA's)didn't show favorably on Royal Purple's side. Well after having this oil in my sump for over a month, I can honestly say from the bottom of my butt dyno that I love this oil. I don't know if it is in my mind or not but I feel that I have better low end power and torque and the car feels a lot smoother as well. Red Line is supposed to be a very good oil, if not the best and many people who use it brag or notice how smooth their cars run with Red Line. Don't get me wrong the Red Line ran smooth in my car too but Royal Purple has given me a good balance of not only performance but also a quiet and smooth engine. Best of both worlds is what Royal Purple has given me. I am now a believer! Give it a try and hope your results are just as well as mine.
P.S. I also bought Royal Purple oil filter to go with the oil so I am running royally great products. Just go to Pepboys, if you have one and hold a royal purple oil filter, its the heaviest filter compared to the others that they sell there. I have seen the filter cut open and it has a 100% synthetic glass media that filters the finest of wear materials but doesn't restrict flow at the same time. Some filters will compromise oil flow for filtering efficiency and some do the opposite. Not Royal Purple or they claim that.
Great oil, great price May 31, 2010
C. C. Westerfield (Kentucky)
1 out of 1 found this review helpful
Great oil devieverd quickly. I use this in my 2008 Charger. It's nice not changing it ever 3 months.
Showing reviews 1-5 of 11
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