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Old 03-07-2008, 03:09 PM   #1
Scooby Newbie
Member#: 169529
Join Date: Jan 2008
Chapter/Region: SCIC
Location: south oc,cali
07 sti
satin white pearl

Default 07 sti redline or royal purple?

about to get car tuned stage 1 07 sti in cali wanted to change to sny. oil before i take in for tune. i have been planning on using royal purple for the last 11000 miles but today i read the subaru oil thread and it said some things negative about royal purple not being approved for subaru warranty or something . so basically just wondering what everyone runs miles on your cars and what oil you reccomend i can get royal purple for 7 bucks a quart and havent seen much redline aound .
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Old 03-07-2008, 03:37 PM   #2
Scooby Specialist
Member#: 131915
Join Date: Nov 2006
Chapter/Region: MAIC
Location: Richmond/Va Beach
2007 WRX
sexy white pearl


Yea royal purple isn't in an approved class of oil or some bs like that. Something about the phosphorus levels?

I use german castrol and its runs great, still very clean when I change oil at 3k miles.
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Old 03-07-2008, 04:22 PM   #3
Scooby Specialist
Member#: 71682
Join Date: Oct 2004
Chapter/Region: SCIC
Location: Socal with BORICUA blood...
2007 WRX Sti LTD.


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Old 03-07-2008, 04:24 PM   #4
👏 Big Ron 👏
Member#: 18062
Join Date: Apr 2002
Chapter/Region: MAIC
Location: I can save you a ton of cash
on car parts so PM
me b4 j00 buy


I vote post in the right forum.
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Old 03-07-2008, 04:35 PM   #5
Scooby Guru
Member#: 767
Join Date: Jan 2000
Chapter/Region: Tri-State
Location: N.J.
04 FXT


Do a search in this forum with Royal Purple and the Redline in the subject line and you will find 256,590,875 posts.

RP xw30's have a tendency to shear. I would use RP 5w40 in a tuned WRX in So. California, or Redline 10w30 or 5W40. Do a used oil analysis to determine the appropriate oil change interval. Doing a search with "Redline" should show you a result of a recent uoa on RL 5W40.

RP is API certified and RL is not. However, do you have a powertrain warranty anyway?


Last edited by bluesubie; 03-07-2008 at 04:43 PM.
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Old 03-07-2008, 04:56 PM   #6
Scooby Specialist
Member#: 168862
Join Date: Jan 2008
Chapter/Region: NESIC
Location: Portland Maine
2007 ej253n/a 5speed
Red Sox Nation Lifer


i just changed my tranny oil from dino to redline it feels great. that sti 6 speed though needs the lsd additives . research it man but in my opinion its all about the redline.they make the stuff you need . i was having an issue with the 5 speed , when cold first to 2nd would grind , syncros not lining up / slowly like real slow, but the redline has the 5 speed feelin sweet. smooth engadgement. you must shift like insane with a 6 speed i would definatly say you want the redline esspecially living in so cal and summer comin up. plus redline wont void your warentee not that any dealer really honors it anyway.
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