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Old 08-03-2007, 10:06 PM   #1
06STi_noob
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Default Royal Purple engine oil questions

I have done a search and read a bunch of the threads, but am slightly confused. German Castrol is becoming hard to find in my area and I have decided to switch to Royal Purple, what weight do you guys recomend? I looked in the manual and it says to use 5-30 even if you use synthetic oil, and after reading some threads that said that RP 5-30 shears to a 20 weight (even though I doubt it) So my question is what weight RP does everyone run in their cars???
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Old 08-03-2007, 10:59 PM   #2
whitesmoke
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I dont currently own a Subaru but ive always trusted Mobil 1 over RP with the exception of tranny fluid.
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Old 08-03-2007, 11:03 PM   #3
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royal purple is generally good for race cars and cars that have regular oil changes. Royal purple generlly breaks down quicker than most Synthetics.

I would save yourself money and use Mobil1 or even Amsoil.

for a great in depth review of oils check out

www.bobistheoilguy.com
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Old 08-03-2007, 11:10 PM   #4
06STi_noob
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I do not trust Mobil 1 since they changed their formula.
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Old 08-03-2007, 11:11 PM   #5
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i like my RP.....i use 5w-30 and change it like...every 5000 miles.
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Old 08-03-2007, 11:27 PM   #6
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Quote:
Originally Posted by dlouie87 View Post
i like my RP.....i use 5w-30 and change it like...every 5000 miles.
Thanks, that's actually what I bought today.

Anyone else?
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Old 08-03-2007, 11:57 PM   #7
LewisWORX
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I use Mobil 1 10w40 in the summers here. We have been seeing mid 90s for weeks and if I run a lower weight oil I always have very low pressure.
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Old 08-04-2007, 12:00 AM   #8
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I use Amsoil's (TSO) 0w30 racing oil year round.
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Old 08-04-2007, 12:43 AM   #9
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Quote:
Originally Posted by 06grayrex View Post
I use Amsoil's (TSO) 0w30 racing oil year round.
You need to either be an Amsoil dealer or know someone who is to get any. I am talking about oil's that I can walk into a store to get.

I am not knocking on Amsoil in any way I know it is the best, I just don't know where to get it.
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Old 08-04-2007, 12:46 AM   #10
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Quote:
Originally Posted by 06STi_noob View Post
You need to either be an Amsoil dealer or know someone who is to get any. I am talking about oil's that I can walk into a store to get.

I am not knocking on Amsoil in any way I know it is the best, I just don't know where to get it.
goto amsoil.com and do a dealer search

or order online in advance

Amsoil is definetly worth the money over RP. RP is over priced purple junk IMO
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Old 08-04-2007, 12:56 AM   #11
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Quote:
Originally Posted by 06STi_noob View Post
You need to either be an Amsoil dealer or know someone who is to get any. I am talking about oil's that I can walk into a store to get.

I am not knocking on Amsoil in any way I know it is the best, I just don't know where to get it.
Yes go to the web site and you can become a preferred customer or a dealer for a small amount. If/when you order you first case of oil you will save more money off the retail price than what you paid to become a PC... Its well worth it. It will be delivered within a couple of days...Its really quick shipping..That is why I became a Dealer...

Last edited by 06grayrex; 08-04-2007 at 02:35 AM.
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Old 08-04-2007, 06:57 AM   #12
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I switched from M1 a couple of changes ago --> now using RP 10W-30 for the hot months, and will run 5W-30 for the cold ones.
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Old 08-04-2007, 07:27 AM   #13
06STi_noob
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Quote:
Originally Posted by 06grayrex View Post
Yes go to the web site and you can become a preferred customer or a dealer for a small amount. If/when you order you first case of oil you will save more money off the retail price than what you paid to become a PC... Its well worth it. It will be delivered within a couple of days...Its really quick shipping..That is why I became a Dealer...
Wow, I went to the site and checked on the prices and being a prefered cutomer makes Amsoil almost $2.00 cheaper per quart than RP. But that is without shipping, does anyone know how much they charge for shipping? Oil is heavy.
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Old 08-04-2007, 04:00 PM   #14
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You'll be surprised if you look around. I can buy Mobil 1, Amsoil, Royal Purple, and another popular but hard to find brand around me. Salvo's is the place that actually sells the Amsoil.

I've been using 10w30, but I'd like to switch to a XXw40 weight for better engine protection. The lower the viscosity the oil the easier the motor is to turn but it doesnt coat as well.....so low viscosity = more power and better MPG (what Subaru wants you to have) high viscosity = better coating more engine protection (what you want to have)

Most will recommend a 40. Probably going higher then that is a bad thing. Also depends on the weather around you.
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Old 08-04-2007, 04:07 PM   #15
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I don't recommend M1. I've used it until recently, and I changed it because it was magical disappearing oil. Also I read a few things about the M1 shearing pretty badly, down to about a 20w from a 30w, things like that. And no there aren't leaks or other problems, it just seems to be a common thing with that oil (yes i did search extensively). I'm using Royal Purple right now, the 10w-40 because of how damn hot it gets here. I like it so far, no real performance difference to speak of, although it seems a little smoother (could be all in my head).
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Old 08-04-2007, 04:08 PM   #16
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Quote:
Originally Posted by 06STi_noob View Post
Thanks, that's actually what I bought today.

Anyone else?
I use the same oil in my v.5 sti engine. 10w-30 in summer 5w-30 in winter. I love it and will never switch. But on the other hand I dont like to listen to what everyone else says because I am weird like that. RP is the best oil I have ever used.
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Old 08-04-2007, 04:41 PM   #17
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I run RP. I have been using 5w-30, and change about every 3500-5000. I like the stuff, but I wonder how much is in my head.
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Old 08-04-2007, 04:44 PM   #18
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Quote:
Originally Posted by whitesmoke View Post
I dont currently own a Subaru but ive always trusted Mobil 1 over RP with the exception of tranny fluid.
Def NOT the case with a FI car......

Royal Purple 10w-40 ftw......
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Old 08-04-2007, 04:46 PM   #19
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Old 08-04-2007, 06:06 PM   #20
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i was running RP 5w-30 in my car, and it was burning about a quart every 500 miles...i switched to mobil1 and now the car doesnt burn any

it was getting too expensive to keep blowing through oil like that
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Old 08-04-2007, 06:37 PM   #21
Sti King
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Rp is great and you can get it cheap over here. My father use 10w40 and barley burns oil. just my 2cents
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Old 08-04-2007, 07:38 PM   #22
06STi_noob
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Quote:
Originally Posted by Sti King View Post
Rp is great and you can get it cheap over here. My father use 10w40 and barley burns oil. just my 2cents
Where is it cheap? It cost me an arm and a leg for 5 quarts of RP, next oil change I am going to be a prefered customer for Amsoil and try that.
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Old 08-04-2007, 07:56 PM   #23
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While there's a lot of BS and ranting in between posts in this thread, do yourselves (ESPECIALLY those of you running Mobil 1) a favor and read the whole thing... it's very worthy-while and there's some GREAT information here:

http://www.xceedspeed.com/forums/showthread.php?t=77316

For reference, I run Red Line 5w30 in my car with my second choice being Royal Purple.
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Old 08-04-2007, 08:51 PM   #24
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I'm running rp 5w-30 in my 2003 bugeye with 38,000 miles on it and it burns about a fourth of a quart in 3000 miles, i'm damn happy with it so far
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Old 08-04-2007, 09:06 PM   #25
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I've used Mobil1 5w30 all year long for the last 68,xxx miles with no problems at all(car now has 92,800 on it) and use Red
line for everything else. I would use Red Line 5/30 oil if I didn't have to special order it..btw Uncle Scotty's Cocktail in the tranny for the last 20k..can't beat it!!
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