Quote:
Originally Posted by FastOil
it breaks down after your filrst pass on the 1/4 mile, or your hard street pull 
do some reading you migh re think.
http://www.enhancedsyntheticoil.com/..._vs_AMSOIL.htm
New York, NY – April 1, 2009 – The National Advertising Division of the Council of Better Business Bureaus has recommended that Royal Purple, Ltd., modify or discontinue certain advertising claims for it’s synthetic motor oil.
i am actually very very suprised by how well this community supports Royal Purple, it amazing i though it was a honda civic thing  |
That BBB complaint was from another Oil Manufacture, the claims was what was argued about not the Oil. the reason was that they had no 3rd party proof of the claims...
I ran Royal Purple since I bought the car and it had it's first Oil Change (July 2005) 70,000 miles lator and I replaced the Stock Cams with COMP 127200 NSR Cams. Anyway, I did not look at the cams until months lator when I noticed they looked new, confused I asked a friend to loan me his cams from his 2007 Mustang GT with 40,000 miles using Mobil 1 5w20.
Right off the bat I noticed the scaring and coloration. So I decided to Document the findings. Could the Royal Purple Marketing be True?
This Image shows Both Cams with Descriptions.
Image 4 & 5 show No wear from the edge of the Lobe to the center of the lobe on Royal Purple 5w20
Measure the Edge because I need a surface that has not been touched by the follower (Baseline)
Measure the Center and shows no wear
Image 4 & 5 Show wearing on the Cam Lobe from the follower on the Mobil 1 5w20 Oil
sure 100th of a MM is minor but the Royal Purple Cam has almost twice the Milage...
Again Measure the Edge for a baseline
Then the Center and there was some wear.
So I had to make sure my test vehicle was not a fluke so i borrowed another set of cams from a 2006 Mustang GT (image #3)
with 36,000 miles who always used Mobil 1 as well. Again the Cams look simular, (Top cam from 2006, Middle Cam from 2007
and the Bottom Cam from the 2005)
You can make your own conclusions but from this test I would have to say that Royal Purple's Claims about Less friction, less wear is not a gimick...
Amsoil and Royal Purple are very simular in that they are 100% Synthetic (No Mineral Oil Base Stock) like Mobil 1 and they both add ZDDP and additive that cleanes the engine and reduces wear. Royal Purple adds a small amount of a Moly simular to graphite this may be what created the reduced friction.
Here is my Oil Report
I helped a Friend remove his valve covers because we wanted to get them powder coated, He also used RP since the day he bought his GT, 45000 miles later, you can see his Cams
