Have you found out anything about Royal Purple and specifically, how it compares to Mobil 1?

 

All I know is that Vader still uses Mobil 1. And he highly praises Amsoil as well, just hard to find.

 

http://www.synerlec.com/dyno.html

Has Dyno results versus Mobil 1 with Prolong listed. The first thing to pop into my head: Why not test against straight Mobil 1??

 

i talked to a royal purple rep last week at the memphis race. naturally he said it was the best, anyway they do have a very extensive line, much larger and more specific than anyone else. it's carried by napa and if it sin't in the store they have it in the wearhouse.

 

Cort,

I normally avoid the posts that specifically name members (that's what Private Messaging and email are used for), but since this is a very common topic, you'll get the exception. (plus, you've got a Cobra in the garage, and if that ain't cool, not much is...)

Amsoil and Mobil Oil were at the forefront of synthetic lubrication technology and engineering. I can understand and appreciate Mobil entering the field some forty years ago, given their available capital and human resources. The fact that they would divert their energies to develop a market is admirable. Also, they offer an excellent line of fully synthetic products for both industry and general use. I've been using their industrial synthetics since the early '80s with great success. Some of the equipment using it has outlasted my career.

However, a company like Amsoil starting up at almost the same time to undertake the task against the larger oil companies is just plain praiseworthy. That notwithstanding, the fact that they've done such an excellent job in engineering and blending synthetics stands alone. What is sad for them is that while they spent a lot of energy developing an excellent product, almost no effort was spent to market it. Now they are playing catch-up in a market where they should be a leader. They offer a broad range of excellent industrial and automotive products that not many people know about.

Another thing that I find somewhat curious about Amsoil is that a large percentage of their base stocks come from Exxon/Mobil, with the additive packages being developed and blended in-house. What might that say about the competittion?

Either one is a good product. As for Royal Purple, I have no experience with it, and probably never will unless someone independent like Plant Engineering magazine does another head-to-head comparative analysis with their products against the others. In the interim, I'm not risking my equipment on an also-ran until the facts are available. I've had good, measurable, quantitative success with what I'm using.

As a side note, if you want a little background on Mobil and synthetics in general, ask Craig Moates. I think he knows someone who is a chemist at Mobil, and possibly can get some real technical data for you. Just a hunch.

 

OK. I'll stick with Mobil 1. I had found a question about Royal Purple from a few months ago. Vader, you'd said you had no experience with it--I was just wondering if anything had changed.

Thanks for the compliment on the Cobra. And yeah, I'll leave names out of the subject.

 

We had a local 'Dyno Day' for a Corvette club some time ago. We had dynoed 16 cars (all running Mobil1) and then randomely pulled 12 of those and changed the oil over to Royal Purple. Funny, we picked up an average of 12 HP increase.

I have done some amount of engine development with TRACO Engineering (whom has developed/built some of the most historic Cheverolet engines) and I see all of us are amoung the same opinion on oil so far. The only other thing we ran in the 'higher end' engines was RedLine. The only difference we ever found between the oils we used, Mobile and RedLine, was that with the RedLine we saw less upper valvestem wear. Thats it. The race engines were pulled and rebuilt around 40,000 miles, which would equate to roughly 100,000 street miles, and other than the valvestem wear and a reduction in overall running temp, that was the only difference.

I myself still run Mobil1. It can bought any where....has been proven in too many API, MIL and SAE tests to list.

As for RedLine and Royal Purple, they are aerospace hand-me-downs. They too have been through every test known to man. Lubricant technology has come a long way in the last 10 years. I used Mobil1 in my last testbed engine, and it went 327,000 miles before I got tired of it and tried to grenade it. The valvestems showed little wear and the piston rings were just as sharp as the day I assembled it.

Whatever, food for thought.............

 

Use Royal Purple in my hot stock dirt track car and i love it. Ran the ultra-lite 355ci from april to october last year and when it was torn down in the off season, the cross-hatched pattern, from the hone, was still visible on the cylinder walls. I will not use anything else.

 

Did you ever notice a difference between the Mobil 1 reformulations over the years?

 

I have heard that using Mobil 1 or any other synthetic oil in an older engine may cause it to leak. Is this true?

 

yeah, mine used to

 

Search for this because there have been a lot of posts about it. The concensus seems to be that after switching to sythetic, it may leak at first as the crap is cleaned out of the seals. However the sythetic causes the seals to swell and the leaking then stops.