:pc: -

DieselMinded's Sig:

What's the question? Here's comes a good debate. -

Heath's Sig:

AMSOIL Regency Direct Jobber
My AMSOIL Website
Buy AMSOIL at wholesale/purchase options.
Have questions or want pricing? Contact me

LOL

Ok Ready ?

How is Royal Purple Better than Amsoil ?

Simple Question ... Short Answer ...LOL

DM -

Royal Purple matches my truck so it's gotta be better for it. -

Uncle Bubba's Sig:

99 Quad Cab, 4wd, Drag Comp W/Pump Wire & Boost Elbow installed, K&N Air Canon, MBRP exhaust, Belt Drive Lift Pump and bottom Bulkhead feed from the tank, Isspro EV Pyrometer, Boost Gauge, Fuel Pressure Gauge, DT Pro Fab Trac Bar, South Bend 13-1.25 Con O Clutch, Ranch Hand Bumper, Borgeson Steering Shaft, Black Silicone Boots, 2" Lift Soft Ride Front Coils, Solenoid High Idle Kit, Bilstein 5100 HD Shocks, Rickson 19.5 Wheels w/Hancoock Rubber, HD Maxx Link Sway Bar Links, Superlift dual front stabilizer, EGR Brakes Front and Back, RV275 Injector's, Blue Chip VP44, Prodigy brake controller, B&W Gooseneck hitch and more I can't remember right now. Not to mention more to come I'm sure.
374.2/846.7 at 30psi

I think you have that backwards????
Both very good lubricants, but I lean to the most experienced.
Not much comparative data out there. Do have RP motocycle data and they seem to be a little more volitile and didn't fair as well in viscosity shear stability. Don't know if you can relate that to their other oils, but in general, AMSOIL is the only one with additive packages geared for longer intervals.(More for your money) -

99.....you have a purple truck? -

Nice answer Heath ,

The best Question to ask at Interviews is

So Whats your Weak Spots ?

A good Reply is ,, Im Too Perfect ...LOL

Amsoil seems to be the way to go Im still running Delvac And im sure theres many reasons why i should swap but my reason is most likly the same for alot of others Money (In the Short Run)

Im planning on having my truck for a while so it would be wise for me to feed her the best

DM -

We use Royal Purple in all our equiptment at work and have never seen any amsoil Didnt know if Royal Purple was better at Industrial Applications and amsoil at automotive?

DM -

As I hide my head in shame, I will say that it is Amethyst. When I was gettin ready to get the kind of truck I always wanted I had to make a deal with the devil. I got to pick the kind and she got to pick the color. She said Amethyst and I said what-ever. I didn't even know what the color was. I was figurin some kind of blue or green or somthing. Ordered the truck and it showed up, low and behold purple. -

Don't know about industrial?? Automotive may be another thing. AMSOIL is actually comparable price wise if you buy it the correct way
Here is a response from AMSOIL tech support I forgot was asked some time ago:

As you may know, RP is big in racing circles. The chemistry they use is something we choose not to use. One of our big selling points is extended drain intervals. Some additive chemicals can cause adverse conditions when used for long periods.

Royal Purple uses a different chemistry than most. They are one of only a handful of marketers using Moly in their oil. Moly is a solid, specifically banned by Cummins, due to excessive valve train wear.

Moly (Molybdenum Disulfide) is a processed mineral that is similar in appearance to graphite. Moly has good lubricating properties when used either by itself (in dry power form or as an additive to oil or other lubricants). Particles of the Moly can come out of suspension and agglomerate. This can actually clog oil filters or oil lines and the rest normally settles in the bottom of the oil pan. This seems to be more likely when using extended drain intervals. The only test we ran on RP involved their 20W50 Racing oil versus our AMSOIL Series 2000 Synthetic 20W50 Racing Oil (TRO). We ran two 4 ball wear tests with different parameters, a spectrographic baseline, FTIR scan and volatility tests. The Royal Purple showed a significantly high volatility rate with a 12.51% boil off rate. This compares to TRO with a 4.47% volatility rating. Wear scars were also smaller with the TRO. For example the TRO left a .41mm scar and the RP oil left a .66mm scar. There was also a surprising difference in the viscosity index. The RP has a VI of 129 versus 155 for the TRO. The higher the VI, the better the viscosity stays in place at high temperatures.

This information was provided by AMSOIL Tech Department. They had an independent lab test Royal Purple against AMSOIL. The results are posted above. They have found Moly in Royal Purple. As stated above, this can have negative effects on your engine. -

That's alright...it's what under the hood that matters -

Thanks for the Moly Infomation thats the kind of thing i was looking for THANKS

DM -

Ive never run either, but Ive heard good stuff about both... Looking forward to what others have to say on the subject.
Scott -

dieseljunkie's Sig:

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I've been very curious as well and received a lot of helpful info this past weekend @ the tulare drags. I signed up and I'm seriously think'n about becoming a dealer in my area, Amsoil that is. -

Buckshotmckee's Sig:

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Might as well sign up. It's actually fun once you get going -