On the contrary isn't Rotella one of the oils that specifically does Not meet the new standards calling for less zinc in the oil to meet reduced emissions regulations.

That is of course why people like it since the zinc is what protects your motor, but it's also supposedly rotting out your cat's and killing us all :rofl2:

I wish Rotella T Synth was part of the above oil testings. Im sure I could find a wear test for it though.

Yea it doesnt meet emissions reqs for standard passenger vehicles with emmissions controls. Diesel engines have much different standards, and much different stress/tollerances. its not easy making ~1000 lb/tq at the wheels.

That test, as any other test, could be easily challenged... This said, it is self-explanatory!

Also, and i speak with experience using RP oils, i never had any issues or bad oil analysis reports using RP for the 370.

The only suggestion would be to wait for at least 5k of breaking before starting using Royal Purple.

ps. I "love" theese oil threads...

I Know, i know...lol

Personal Favorite is Eneos Oil

YouTube - Nippon Oil ENEOS Dyno Testing PowerTV

OMG! Thanks for the insight. I never knew. So sad.:shakes head:

No problem. Other than the original OEM filter that was placed on the car at the factory, I've only used K&N or Purolator PureOne oil filters (although I'd also have no problem using Wix).

I've run RP in a 69 bigBlock Camaro drag car, a 68 Mustang FB roadracer, a 97 Dodge 2500 HD Ram, 07 Yota Tundra, 10 370Z, and a 11 Ford Raptor with no problem what so ever. However, I would caution using that oil to 8K miles. If you expose your vehicle to rough conditions or live in the desert you wanna think bout changing that oil WAY sooner. Redline is also a very good synth oil. Probably better then RP.

Royal Purple is not listed in the Wikipedia, most of the other synthetics are listed. But with Royal Purple being "extremely used, and popular", is not! "I would expect it to be there"!
So I'm toping off oil today, RP, family car. I've used RP for the last 21,000 miles. I'm getting ready to change oil, approaching 6,500 miles. "Curiosity gets me", I pick up my drop light, and look inside the oil port. Disappointed in what I'm seeing! "Oil build up", not a lot, or extreme. I expected better looking than what I saw. "Just enough build up, that I will no longer use RP"!
I'm checking out Amsoil and Redline, I have more reading to do.

Not trying to sound antagonistic. 6500 miles is on the high side for any oil. As you probably know. You want the oil to stay in the motor not drain away into the pan. Of course sludge is another matter. The thing about RP is that it looks used right out of the bottle. Amsoil and Redline are very good. I know a few racers that swear by it. RP is a very small company, as far as the petro business goes. Chevy swears by Mobil but Chevy as a company has been "crap" since the early 70's. They never really recovered fromt the great oil embargo. Even Vette race teams have told me to avoid Chevy replacement parts whenever possible. A friend of mine just blew up a 2010 Z06 goin 175. The Chevy mechanics said the bearings gave out probably from oil starvation. A 200+mph car blows at 175...either bad parts or inadequate oiling. Makes me wonder about Mobil & Chevy.

6,500 is average. Some people go up to 10,000 with synthetic oil(but very few). New models such as the Honda Accord. The recommended oil change is 10,000 miles, and I doubt if that oil is synthetic.
Welcome to the forum:tiphat:!

Thanks for the salutations Dad!! :roflpuke2: I guess you can run synth longer in softer climates. I did a lot of car and bike racing when I lived in Yuma, AZ. Pretty harsh place to live. If you waited to long to do preventive maintenance you'd find sand in your oil, radiator, airbox, etc! Between racing stuff and the harsh environment I got in the habit of changing that stuff WAY early.

I second this, and if you check out Bob Is The Oil Guy reviews of it, you will see that many more people really like this stuff too!

Actually, I get the Ultra or whatever the newest formulation is. Excellent oil and at a fairly reasonable price. I change it every 5K miles and use a Purolator Pure 1 oil filter.

I do that even though I had free oil changes thrown in. They do the labor, but I buy the oil and filter because after doing my research, I firmly believe that this is cheap insurance.

http://en.wikipedia.org/wiki/Royal_P..._manufacturer))

Oh ****! Rep point for you. I was wrong!

BMW cars make you change oils every 13-15k miles...Even in south Florida type weather.

I have used RP for 22k miles on the Z and not notices any problems... I have always been an M1 person, but RP seems to do just fine, as long as there is a max cap of 5k per oil change.

rubs hands over the glowing, welcoming warmth of a brand spankin' new rep point...Thanks! :D :tup:

how do you use a RP filter that they don't make for NIssan 370Z?

If you go to myg37.com you will find a huge thread based just on oil. It is mostly people that have sent there oil samples to the lab. BTW Mobil 1 is by far the worst and Penzoil has the best test results. As far as Royal Purple I wouldnt think you would have a problem as long as ur running there standard weight oils and not their race oils. Race oils being 0w-X that give zero resistance on rotating parts for horsepower reasons.

Have any of y'all done an oil analysis after 6k to see if the RP is going bad or just judging by its color? I've run rotella in my diesel out to 10k miles and could have gone another 3k had I wantednto according the UOA's. Did the same thing with delo. My car has had regular old cheap castrol in it for the last 39k miles and a regular old wix filter and no issues to date. I recently switched to rp this past oil change but still a wix filter. Ill run this out to 6k and change it then and wont worry about it at all. Although I will switch to Mobil 1 cause its way cheaper and I saw no difference between rp and conventional oil.

Also, all oils designed to be run in diesel engines have very low zinc these days. Including rotella. If they didn't it would clog up and destroy the dpf filter on the truck. There's more to it than that but its 5am and I'm not typing it out on my phone.

Royal Purple is the best oil hands down. Your friends are jealous or ignorant. Probably go hand in hand.

And Porsche went to 15,000 mile interval on oil changes a few years back, on non-turbo cars. 7,500 on turbos.

oil change intervals should be based on engine revolutions not miles. Your engine oil doesnt affect your tires and your engine revolutions are not counted by the odometer. If you drive 5000 miles almost all highway, running at 2k RPMS or less, then the engine would actually have less revolutions on it than a vehicle driven in stop and go city traffic for 5000 miles. JUst a thought. Now since there isnt an revolutions counter on our cars then I think you should change your oil based on your driving habits, and changing your oil too often doesnt hurt anything.

these engines get so hot that even Mobil 1 supposedly breaks down very quickly. I know of some engine builders who have torn down motors and found damaged internals due to lack of proper lubrication from some who were using RP... now does that mean that it's true and that it's not a good oil? No it doesn't, but it's enough that I won't use it. I use AMSoil SS0 0w30 and I get EXCELLENT gas mileage, the engine is more quiet and it feels like it has a bit more zip. It also is claimed to be able to go 25k miles or 1 year for non performance cars that are not driven hard.... my mother had it in her car for a year and I changed the oil and it still looked, felt slick and smelled fresh. It's all I will EVER use.

no, it's not... and it's proven that it's not... but i'm not going to get into a debate.

OP, here are some tests from AMSoil's site... and while they are on their site, the tests are claimed to be done by independent labs Royal Purple vs AMSOIL

Royal Purple's Synthetic Oil Advertising Claims Have Been Challenged By BP Lubricants
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.

NAD® News For Immediate Release Contact: Linda Bean 212-705-0129

BP LUBRICANTS CHALLENGES ROYAL PURPLE’S CLAIMS FOR SYNTHETIC MOTOR OIL

NAD Recommends Royal Purple Modify, Discontinue Certain Claims

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.

NAD, the advertising industry’s self-regulatory forum, examined comparative performance and superiority claims in print, broadcast and Internet advertising, following a challenge by BP Lubricants.

Claims at issue included:

• “Independent university and industry tests document the performance gains of using Royal Purple. When compared to leading synthetic and conventional motor oils, Royal Purple typically:”

“Increases horsepower and torque by as much as 3%.”

“Reduces engine wear by as much as 80%.”

“Improves fuel economy by as much as 5%.”

“Fuel economy improvement up to 5% or more.”

“Reduces engine heat by as much as 10%.”

“Reductions in heat of up to 12%.”

“Reduces engine heat by as much as 10%.”

“Reduces emissions up to 20% or more.”

“Reductions in emissions of 20% or more.”

• “Unsurpassed,” “Unparalleled,” “Most Advanced.”

• “Provides Film Strength up to 400% stronger than other motor oils.”

• “Superior oxidation stability...”

• “API/ILSAC Certified.”

In its decision, NAD noted that the advertiser voluntarily agreed to discontinue the claims “most advanced,” “unsurpassed performance” and “unparalleled performance,” steps that NAD found were necessary and proper to avoid confusion in the marketplace NAD noted that it appreciated the advertiser’s participation in the NAD process, especially as a newcomer to the retail automotive industry as it branches out from industrial lubricants. Further, NAD noted that testimonials included in a wide range of auto-enthusiast publications indicate that Royal Purple’s consumers are “vocally appreciative of its synthetic purple engine oil.”

However, NAD noted, anecdotal evidence based solely on the experiences of individual consumers is insufficient to support product efficacy claims, including claims related to horsepower, torque, fuel economy or engine heat. While the advertiser may quote from published articles if it provides clear and conspicuous attribution to the publisher, it may not rely on such articles to support efficacy claims for which it has no reliable independent validation.

Following its review of the non-anecdotal evidence in the record, NAD recommended that the advertiser discontinue the claims “Reduces emissions up to 20% or more.” and “Reductions in emissions of 20% or more” because the studies on which the claims were based are outdated and not consumer-relevant.

NAD recommended that the advertiser discontinue its unsupported claim that Royal Purple motor oil is “API/ILSAC Certified.”

Royal Purple, in its advertiser’s statement, said it “appreciates NAD’s review of the extensive record in this matter as well as the NAD’s recognition of the difficulty the automotive industry has with accurately quantifying performance claims based on bench tests alone as they do not accurately reflect real world results.”

The company noted that, while it believes the “tests and testimonials it supplied as evidence accurately portray the benefits of using its synthetic oil in a wide variety of applications, it defers to the NAD’s position that those tests and testimonials alone are insufficient to support specific performance attribute claims in consumer advertising.”

The company noted, as well, that it has “already made changes to its advertising in accordance with the NAD recommendations and will continue to implement NAD’s recommendations and analysis in developing Royal Purple’s future advertising.”

NAD's inquiry was conducted under NAD/CARU/NARB Procedures for the Voluntary Self-Regulation of

National Advertising. Details of the initial inquiry, NAD's decision, and the advertiser's response will be

included in the next NAD/CARU Case Report.

I've used RP before in my turbo Mazda, didn't like it. Noticed harshness and engine vibration at high RPMs. Made me nervous. Also seemed to lose power although I have no dyno #s to prove that. Switched back to Mobile 1 and have had no problems.

In my Nissan I use Redline. I change it ever 5K miles (about every 9 months). Twice so far and now due for it's third. The previous two times the oil came out looking brand new.

I should also mention my car seemed to burn a lot of oil before using Redline. At the first oil change I gave her (around 1K miles) she was almost 2 quarts low. I didn't check her when I picked her up so it's possible she was just short from the dealer, but haven't noticed any significant loss after switching to Redline.

Yep, AMSoil and Redline are the two top dogs when it comes to oil... though IMO Mobil 1 is quite good.

I really don't see it as much better than the other, I've always used mobil one synthetic in all of my vehicles even in my integra GS-r back in the day changed it ever 4k, the engine hydrolocked and had to be pulled and rebuilt. The car had 140k miles on it, always ran mobil one synthetic. My mechanic was amazed that there was not a bit of sludge in the engine other than normal discoloration from and wear from any high mileage vehicle, every thing was coated nicely. Same with my STI when i pulled the stock block for the new built one, always ran mobil 1 synthetic changed every 3.5-4k miles, pulled the heads and the engine still was in very very good shape at 70k miles. I didn't rag on the car but i didn't grandma on it either. Sold that long block to a guy without any complaints or news of it giving him problems.

Anywho, long story short. Mobil 1 Synthetic is great IMO and is very good for the generic. I think people mainly buy stuff like redline or RP for the name. Not saying they don't have that bit of extra for racing purpose, but i personally don't think it far exceeds much over anything else. It's all relative if you ask me.

I agree, every engine is built different. Not all of them are going to move and flow oil in the exact same way. That is something I never thought about myself, but i've never owned that many different type of vehicles. I've always been a subaru man :)

I use sex lube as a additive. But have no lab work on it to prove it works. It reduces the bumping and grinding on the cams.

What about those short rough runs, does it still reproduce the safe results?