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Engine/Power - EJ25T (STI and 2006+ WRX) Discussions about the USDM 2006+ WRX and WRX STi 2.5 liter turbo flat-four.

What motor oils are you using on the STI?

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Old Feb 10, 2005 | 11:14 PM
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carnut
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What motor oils are you using on the STI?
I was curious to know what people are running on their cars as far as oil brands and weight? thanks!
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Old Feb 11, 2005 | 12:29 AM
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punkrocksailor
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Torco 5w30, I've been happier with Torco in my engine and tranny than any other brand.
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Old Feb 11, 2005 | 09:36 AM
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Mobil 1 Racing. This is not standard Mobil 1. 0W-30.

http://www.bescaredracing.com/sti/oil/m1r/DSC02367.JPG
http://www.bescaredracing.com/sti/oil/m1r/DSC02369.JPG
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Old Feb 11, 2005 | 10:40 AM
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Disastorpasztor
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Car Info: Blue 05 STi
Originally Posted by WolfPlayer

Do you use this just for racing or just cruising around on the streets as well??
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Old Feb 11, 2005 | 10:21 PM
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what does the stock 05 STI oil brand? and is it synthetic?
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Old Feb 12, 2005 | 09:11 AM
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rexy04STi
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Car Info: 2004 Java Black Pearl/Gold STi
I'm using Amsoil Series 2000 0W-30 in my STi. Runs like a champ.
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Old Feb 12, 2005 | 12:47 PM
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I was running Amsoil 10w-30 Turbo formula. But after hearing that a heavier oil doesn't flow through the turbo as well I'm switching back to Mobil1 5w-30.
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Old Feb 12, 2005 | 12:55 PM
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WolfPlayer
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Originally Posted by Disastorpasztor
Do you use this just for racing or just cruising around on the streets as well??
Cruising around the streets as well. It is a racing oil that has been designed with plenty of detergents for street use. I'll be sending samples off to Blackstone at 1000 miles, 2000 miles, and 3000 miles.

t
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Old Feb 12, 2005 | 04:36 PM
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rexy04STi
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Car Info: 2004 Java Black Pearl/Gold STi
Originally Posted by DChan
I was running Amsoil 10w-30 Turbo formula. But after hearing that a heavier oil doesn't flow through the turbo as well I'm switching back to Mobil1 5w-30.
That's why I'm running the 0-30. Been to a couple of track days with and haven't had any problems what so ever. In fact, everytime I've pulled the oil down, it was like it was brand new, not even the slightest burnt.
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Old Feb 15, 2005 | 10:54 PM
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Stock oil is 5W30 dino oil.

I'd recommend using Kendall GT 5W30 until you've got about 7-8k miles, then switch to Redline 10W40 Full Synthetic.
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Old Feb 15, 2005 | 10:57 PM
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what is dino, never heard of it
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Old Feb 15, 2005 | 11:38 PM
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clsti
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i think you guys should use higher oil, Cause i talked to Gushi from Gushi auto and he knows alot about cars and he told me to use at least 5w-50 in my sti because of the turbo.
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Old Feb 16, 2005 | 12:42 AM
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Car Info: Big Thanks Jeremy@CrucialRacing and Ed@EQ-Tuning
REDLINE 5w30 makes my car go crazy ... mobile 1 is **** compare to redline
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Old Feb 16, 2005 | 12:55 AM
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Kevin M
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Originally Posted by clsti
i think you guys should use higher oil, Cause i talked to Gushi from Gushi auto and he knows alot about cars and he told me to use at least 5w-50 in my sti because of the turbo.
Your friend Gushi hasn't learned much in 15-20 years. Thinner oil is better at protecting your engine, and any modern synthetic will have no trouble holding up even in the turbo.
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Old Feb 16, 2005 | 07:17 AM
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Car Info: 05 H2 SUT, 45 GPW, 10 Murano, 13 Boss 302
I use dino 5w30 in my STi. I'm just about at 11,000 miles. Typically I use the Chevron brand.

I live in Kalifornia, so weather is not an issue in choosing oil weights.
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