Any opinions on this stuff?

I have it through out my trucks and it works for me.


I change my oil every 5000 to 7500 miles depending on the type of driving I do. Some of their stuff, like Amsoil, is a bit to slick for certain applications.

It is all I use, and have had good success with it.

Any opinions on this stuff?








http://www.dieselplace.com/forum/smileys/Throw Up.gif

abear you know something I dont about the purple,any comments appreciated.

abear you know something I dont about the purple,any comments appreciated.


Here's an experience I had with Royal Purple. I copied it from a post I made on the DP a year or so ago. Maybe the experience I had with this stuff is isolated or maybe they improved on the product since then. I dont know.(The actual incident occured a few years before the post) I'm not trying to persuade anyone with their decision, just letting you all know what happened in my case. Never the less here it is.



Over the last few years I've been running regular (Dino) oil meeting the CI spec. in my engines and change it at recommended intervals with excellent results.
The Reason: Myself and a few others were witnesses to a Royal Purple demo that consisted of a bearing running off of an electric motor that was measuring amp draw while submerged in different oils @different loads. To make a long story short this demo(sales pitch)showed the Royal Purple Synthetic products to be superior to all. After selling us on these oils I switched my truck over to them and encountered the following.
1. My engine started using a lot of oil.
2. The RP 85w90 manual transmission oil was performing so bad that I could hardly shift gears.
3. After about 30000 miles a winding sound developed in the rear end. After draining this oil it was about the color of neverseize. (Possibly my fault for leaving it in there after 1 and2.)Although the 1st 2 problems were corrected by changing oils, the last wasn't.


I have been hearing good reports about the Mobil Delvac I and have been tempted to try it, but I'm not sure I would be able to shake that haunting gut feeling. I hope I'm not missing out on a quality product because of my past experience.

1.) I go a full 10,000 miles between oil changes, and have never even dropped 1/4 quart low.


2.) I run royal purple in the Allison, and it held the Quad 165HP tune for quite some time before upgrading to the full ATS. I still use Royal Purple in the Allison, and all I can say is the shifts couldn't be quicker.


3.) I only have 23,000 miles on the truck now, but 20,000 have been with Royal Purple, and there is no gear whine or any other issues to report.


I am sorry to hear about your bad experiences, but I have heard many more positive ones, and yours is the first bad experience I have heard.

Has your oil consumpsion stopped since you quit using RP?


If you put it in your '02 in the early miles of its life it may not have been able to have had the rings seat yet and with the synthetic oil or maybe the slicker RP it just kept passing by the rings.

I had put it in a 1984 3/4 ton gasser. It had about 80-90K miles on it when I put it in. Richard Gossolin the RP rep I purchased from said it is possible it cleaned the rings and added to blowby. He wasn't sure. This was a truck that towed heavy. Funny thing is that when I went back to non synthetic my consumption tapered back off and I continued to run the truck another +120K. We did run the additive RP 4C to our larger natural gas engines offshore without problems. I'm not trying to discourage anyone and my original post may have been misleading. Like I said this was in the earlier RP days. If mininal consumption and analysis says you're ok then I wouldn't worry about what I posted. Who knows. I may some day give it another try.


I also would like to know if anyone noticed a difference in shifting ease when switching to RP in their standard transmission. This was another area that I noticed the truck was harder to shift. I correlated that with the slickness of the oil. Dino made it easier. http://www.dieselplace.com/forum/smileys/Ermm.gif

I've had good luck so far with that Purple stuff. I guess time will tell.

thanks for the input abear,I have been using rp for the last 20000 miles and never had a problem.I work for a oil dist and we sell the piss out of rp to oil companies for a wide variety of applications,let me know if you decide to switch back I'll see about getting it for you at my cost.

I have a 01 GMC2500HD/DA with 143K on it. The only time it's been back in the shop is to put a transfer case in it due to landing on a big rock! I change fluids on a regular bases and use only the oem spec stuff. It may be just me but whey spend the extra money on RP!

I have no opinion on any small oil company making synthetic oil.I won't use them period. I use what the big boys use when they absolutely have to get there. What you see pasted on the car is NOT what they are using. When you see a big name brand oil bottle in the pits at any race you choose, you will never guess what is really in the container. The big boys did not choose the low bidder.


mike

Motor oil is just like insureance policies. You could get by just fine with Penz and not have any problems and just the same with the RP, but when you have engine failure due to siezing up one of your first reactions will probably be "Sh!t, I should have used that other stuff".


That sounds alot like what abear said. But this has been the only negative report I have read about RP.


And my old philosophy is "You get what you pay for".

I have no opinion on any small oil company making synthetic oil.I won't use them period. I use what the big boys use when they absolutely have to get there. What you see pasted on the car is NOT what they are using. When you see a big name brand oil bottle in the pits at any race you choose, you will never guess what is really in the container. The big boys did not choose the low bidder.


mike





IMO, just because it is a smaller company does not mean it is not as good. For instance, I see in your sig you are running suncoast. If you really feel that way why do you think suncoast coast makes tranny parts for an ally better than ally? Research. I notice you are a knowledgable person and from your other posts you do alot of research. I agree on this 100%, but is it not research instead of small bussiness vs. big bussiness? Or am I missunderstanding you?Edited by: dmaxfan

I believe he chose Suncoast because Allison does not build up their trannies to handle extra hp/tq. They stick with the stock form for insurance purposes and reliablity.


But I agree with you. I would say every company started out smaller than they are now and with the product they are selling made them as big as they are now.

dmaxfan


Hope you noticed that I did not say anything bad about small oil companys. I have reasons for choosing the oil that I use, so do you. I have been lucky to sit in on a couple of meetings with the company I like as a guest of my friend and liked what I saw and heard. It was the most unbiased delivery I ever saw. All the smaller oil companys were discussed and compared in an unbiased way. F1, Nascar, Indy, and evrything else was on the table. This all reconfirmed my choice in this company. Their engine oil works pretty good in the diesel automatics for racing. Talk to some people, investigate like I do. Don't take the written word as gospel.


mike

Thanks Mike, I just misunderstood you.http://www.dieselplace.com/forum/smileys/Big Smile.gif

No experience with their ATF (assuming that is what you are asking about in the Alli forum) but:





I've heard from a RP user who had high lead content in his Dmax oil analysis. Switched away and it went down. This I believe highly likely to be oil related.





Another 6.5 owner in FL had 3 engines down out of 6. The 3 on RP went down. This could just be coincidence.





My 6.5 had RP in it when it flew apart, AND when the reman went down. This could just be coincidence.





There is something about the ester content or use thereof that can soften bearing or so I am told. It is also not recommended for diesels as I am told. The above is merely anecdotal evidence and no formal testing has been done by myself. George M could likely comment on the ester thing.





Get an analysis done if you are running it...Edited by: Kennedy

I am not all that familure with lead, but would'nt it just add extra lube cherectorstics in the engine.


I don't know what else lead would harm in the engine.

I am not all that familure with lead, but would'nt it just add extra lube cherectorstics in the engine.


I don't know what else lead would harm in the engine.

I think a high lead content could indicate impending bearing failure.

Jim

lead can be an indication of bearings


It is used as an additive in some gear oils. I am not sure about RP's formula.Edited by: salesrep