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Old 06-01-2010, 05:08 PM   #1
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Royal purple???

Anyone recomend royal purple as motor oil/gear oil etc...??

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Old 06-01-2010, 05:27 PM   #2
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I don't think it's worth the money personally, but a lot of people like it! Def good oil products...

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Old 06-01-2010, 05:31 PM   #3
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I never understood buying expensive oils...ive never had a motor go bad on me and i've always run whatever is on sale. My 96 dakota has 175k on it and is going strong...i only change the oil at inspection each year and have no problems.
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Old 06-01-2010, 05:37 PM   #4
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I've used it in my Diffs . . . worked fine for me. I think I have RP in my Rear and Mobile One in the front right now. Finding the Synthetic 75/140 around here can be tough so I go with one or the other depending on what I can find . . . had to peice bottles together from 3 or 4 places to do my diffs last time. It is pricey, but luckily you don't have to flush the diffs all the time.
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Old 06-01-2010, 05:40 PM   #5
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when i bought my jeep a year ago, the shifting was pretty hard, and i usually grinded a little when going into 2nd, 3rd, and 4th gear, unless I took it really slow. So, one day, about 6 months ago, i switched my trans fluid to the royal purple syncromesh or whatever it is, and no lie, that day, I got a new jeep. way easier shifting, and zero grinding ever again. ever. best 20 min fix of my life. I will always recommend at least that specific gear lube by royal purple... worked miracles. the old fluid smelled rank, so it could have been a combination of both bad old oil and good new oil, but it was enough to sell me. and its not even that expensive, only need 2 quarts on the nv3550, but 4 qts for the ax-15
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Old 06-01-2010, 05:55 PM   #6
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For NV3550 use Royal purple syncroMAX(correct propertys)NOT syncroMESH. I've used syncromax in my nv3550 for years. Smoother shifting even in our -35 winters. Good stuff.
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Old 06-01-2010, 06:05 PM   #7
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hit the nail on the head... i knew it was syncro-something haha
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Old 06-01-2010, 06:21 PM   #8
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So to sum it up RP is Expensive but totally worth it??? lol
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Old 06-01-2010, 06:25 PM   #9
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at least for the tranny. but the local 4x4 around here suggested royal purple in everything... could be real advice, could be sales pitch.. who knows. but ive certainly never heard people say bad things about RP. i figure its only a couple bucks more, and if it increases the life at all, good enough for me.
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Picture yourself in a boat on a river, with tangerine trees and marmalade skies. Somebody calls you, you answer quite slowly, a girl with kaleidoscope eyes
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Old 06-01-2010, 06:31 PM   #10
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I know a lot of guys that race a 1/4mi and mostly all use RP.. heard some mixed things but like you said if it increases the life of my motor/tranny/diff... than its ok by me.. just wanted opinions about using them in jeeps is all lol
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Old 06-01-2010, 06:33 PM   #11
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Royal Purple makes good quality oil but it's no better than any other good quality oil. In fact, its purple color is only temporary and is simply a dye used for marketing purposes. I stick with known good quality petroleum products like from Valvoline, Havoline, Torco, etc. & will only pay a little extra for things like the transmission where some of the synthetics are very good. For my axles, I purposely avoid synthetics and go for good quality dino gear lubes like Torco GL-5 gear lube I get from Currie (it has Currie's name on the bottle).
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Old 06-01-2010, 06:34 PM   #12
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Quote:
Originally Posted by LIMEGREENWITHENVY View Post
I know a lot of guys that race a 1/4mi and mostly all use RP.. heard some mixed things but like you said if it increases the life of my motor/tranny/diff... than its ok by me.. just wanted opinions about using them in jeeps is all lol
i cant say how well it works in anything besides the trans, as i have no personal experience. but i'm telling you as I was back out out my garage after changing the fluid, i already had felt a difference. then on the street it was so much easier to get in gear. needless to say, if I change anything else I will use RP..
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Old 06-01-2010, 06:35 PM   #13
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although I would listen to jerry...
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Picture yourself in a boat on a river, with tangerine trees and marmalade skies. Somebody calls you, you answer quite slowly, a girl with kaleidoscope eyes
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Old 06-01-2010, 06:42 PM   #14
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hmmm.... interesting... thanks Guys!!
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Old 06-01-2010, 07:04 PM   #15
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Personally, I like it a lot. I have used it in my '73 Mustang since I have owned it (4 years) and it's been great. I store it during the winter and have gone up to two months without starting it (I know...but hey, I was out of the state for half that time!). But that motor starts with ease every time. I have only changed the oil twice in my jeep (bought it in January) and have used RP both times and have loved it.
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Old 06-01-2010, 07:13 PM   #16
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RP is good. I'm a Mobil fan though. I run mobil1 synth in the engine and Mobil synth in my axles. My trans though is tempermental so I don't know what I'm going to put in it yet. Maybe the Mopar sh*t.

I wouldn't have a problem putting royal purple anywhere though. It's good oil.

That cheap stuff is ok too, just change it out more often. That's why I'm running high quality synthetics. I'm lazy
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Old 06-01-2010, 07:46 PM   #17
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Quote:
Originally Posted by Jerry Bransford View Post
For my axles, I purposely avoid synthetics and go for good quality dino gear lubes like Torco GL-5 gear lube I get from Currie (it has Currie's name on the bottle).
So what experience causes you to avoid synthetic gear oil for the differentials?

What type of fluid would you put in a 2005 4.0L 4 speed auto trans?
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Old 06-01-2010, 07:58 PM   #18
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Quote:
Originally Posted by speed_phreak View Post
So what experience causes you to avoid synthetic gear oil for the differentials?

What type of fluid would you put in a 2005 4.0L 4 speed auto trans?
Many aftermarket axle manufacturers like Currie have found their axles run hotter with synthetic gear lubes. Yes, that was a very surprising find for them and it took a long time with much double-checking of their results to change their warranty to require only non-synthetic gear lubes. For that reason, they fill them with a non-synthetic Torco gear lube & require the buyer use only non-synthetic gear lubes to keep their warranty in effect.

In the 4-speed automatic trans, I would run nearly any major brand synthetic ATF+4. Personally, I prefer and use Valvoline but so long as it was an ATF+4, I'd run any other major brand of ATF+4 and feel perfectly happy that the transmission was being well protected. Valvoline, Havoline, Mobil-1, Royal Purple (more $$$ than I think its worth), Pennzoil, Redline, etc.
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Old 06-01-2010, 09:25 PM   #19
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Only things I have found that don't make my trans sticky on the shifts is Red Line MTL or the RP Syncromax... This is with the NV3550

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