"Royal Purple"

Is it better then other Synthetic oils, i was told there is ET & MPH to be gain by running this oil, but don't know if thats over conventional or synthetic oils, does anyone use it, have you noticed a difference?

This engine of mine has had synthetic run in it for a good 100K plus miles, so would going to "Royal Purple" gain anything is basically my Q. would like real results, not hear-say :cool:

Thanks.

http://www.bobistheoilguy.com/forums/ubbthreads.php is the place to go.

You wont get much meaningful info on this forum just people repeating what marketing told them.

Short answer, NO, and probably not any worse either. These adds usually mean over conventional oils, not other synthetics. Also you have to be careful, because often they are comparing them to higher viscosity oils. They'll be comparing their 5W30 to someone elses 10W30.

There are at least two grades of Royal Purple. One is the more common one you get in the autoparts stores for $6.00 to $7.00 a quart. There is also a racing version that sells for around $14.00 a quart. I believe the dyno test you see are based on the higher cost version. What are the differences between the two I do not know. I know there are other versions of the higher priced racing version.

Is it better then other Synthetic oils, .

Decide for yourself: http://jcpm-inc.com/images/oiltest.pdf

That is not meanigful testing. BLEACH does well in that sort of testing but I wont fill the crankcase with it.

Decide for yourself: http://jcpm-inc.com/images/oiltest.pdf

thats a really cool article :thumb:

For the price the Valvoline blend looks like the winner.

a number of years ago the dumbasses on Horsepower TV did a dyno test before and after a full fluid swap to RP. i think they gained 3-5hp or something.

siince then you hear people constantly talk about how RP gains you power.

but the TV test didnt say anything about the type of oil that was in the car before the swap. if it was some 7000mile, heavy weight, low grade, conventional oil...than swapping the engine, trans and diff fluids to full synthetic new oil...of course you're gonna see a gain.

stick with what you can get at a reasonable price...and change it 3000 or 5000 miles. i use moble 1 and have gone to 5000 mile changes.

Decide for yourself: http://jcpm-inc.com/images/oiltest.pdf

This is the test I refered to in the last discusion "we" had on syn. oil. It's total BS. To start with it's not a Falex/Timken test machine but a cheap home made copy.........I was going to post all the problems with this test but I think this, from the "Tinken FAQ site" will explain better.

I saw the phrase “60 O.K. Timken Load” on a tube of lubrication. What does that mean?
Between 1935 and 1972, The Timken Company produced and sold a lubricant test machine that was used to determine the EP (extreme pressure) characteristics of grease and oil lubricants. It became an industry-standard test. A bearing race is mounted on a tapered arbor that is rotating at a high speed. A square, steel test block is then loaded against the rotating race, with the contact area flooded with the test lubricant. The load on the block is increased in increments until the oil film is broken and the spinning race produces a score mark on the test block. The load-value that produces the score is then called the Timken “O.K.” load rating.

It was generally assumed that the higher the O.K. value, the more load the lube could hold without the film strength being compromised. However, this is not necessarily the case, and the primary purpose of the test is to determine whether or not the lube has an EP additive. Values higher than 35 lbs. indicate the presence of an EP additive.

the primary purpose of the test is to determine whether or not the lube has an EP additive And is NOT a "film strength" test as wrongly stated in the Street Commodores article.
Also if you would have bothered to go to the Falex Corp. web site, you would have seen that there are many different type of test machines for test many different properties.
Sorry, but you can not do a single test for a single property and then proclaim that "my oil" is better then yours!!