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Go Back   IWSTI.com: Subaru WRX STI Forums > IWSTI Engine & Drivetrain > 2.5 Liter/Litre Factory Motor


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Old 09-04-2005, 02:39 AM   #1
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Default Motor Silk

Anyone ever put an oil additive called Motor Silk in their STI?


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Old 09-06-2005, 09:57 AM   #2
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You should put nothing but motor oil in the engine. Additives are BAD!!
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Old 09-06-2005, 10:35 AM   #3
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Also, thats a reason to NOT use catrol syntec - it uses teflon as an additive which can soften engine materials in the long run. Its a no no

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Old 09-12-2005, 10:46 AM   #4
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NO! NO! NO! NO! NO! NO! NO!

Motor silk is what we "believe" DESTROYED an entire motor. It clogged ALL the small hard oil lines. It destroyed the turbo (exhaust wheel found in DP), crank bearings (BAD rod knock), heads and cams (ALL bearing surfaces scored beyond use).

We haven't proven it yet, but they are being given the $14,000 bill!!!

SS
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Old 09-12-2005, 10:52 AM   #5
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Old 09-12-2005, 10:54 AM   #6
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Quote:
Originally Posted by Subaru of Gwinnett
...It destroyed the turbo (exhaust wheel found in DP...
The WHEEL was in the DP??? Juheesus. And there was still some oil in the case?
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Old 09-12-2005, 11:13 AM   #7
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what about fuel additives, like BG44K?
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Old 09-12-2005, 02:29 PM   #8
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Quote:
Originally Posted by BoostJunkie
what about fuel additives, like BG44K?

That's used to clean the engine (combustion chamber).

An 04-06 Sti doesn't need the engine cleaned.
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Old 09-13-2005, 07:46 AM   #9
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Quote:
Originally Posted by TreyS
That's used to clean the engine (combustion chamber).

An 04-06 Sti doesn't need the engine cleaned.
Why would the STi not need the engine cleaned? Does the EJ257 not produce carbon build up in the combustion chambers??

Actually the reason why I wouldn't use the BG TEC is I would be afraid that pieces of carbon exiting the exhaust port could damage the turbo impeller.
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Old 09-13-2005, 12:16 PM   #10
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What about adding stuff like octane booster to your fuel? I know that I should only put oil in the engine but what about trying to add octane to your fuel. Could this hurt anything? Just wondering because I get caught driving out in the country and there is only 92 octane and would like to add a octane booster to at least be around 94 octane. Any information would be appreciated.

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Old 09-13-2005, 12:23 PM   #11
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If I am not mistaken, you have to add a hell of alot of octane booster to go from 92 to 94. Those things on raise the number by points. i think one octane number is ten points, and those boosters raise the fuel like 5-7 points. But someone correct me if I am wrong.
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Old 09-13-2005, 02:14 PM   #12
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MMT-based octane boosters work. Torco seems to be the best but the NOS Racing Formula octane booster works in a pinch and can be found in many auto parts stores. I wouldn't touch anything that is not MMT-based.


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