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Registered
Join Date: Jul 2004
Location: uh.. let me check the hotel key
Posts: 1,311
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Swepco Foaming when additive is used!
I thought i had a leak on my 901 because of the blue swepco drips in my garage. I put the car on jack-stands and cleaned off the drips and let it sit over night.
Not a drip! Now jacked up under the suspension so the drive-line angle isn't all funky.. Got the car running, turned up the idle to 2500 and left it in gear for 20 min. Not a drip! Went out for a aggressive drive afterwords... came back.. and sure enough the blue was back. But this time i traced it back to the vent on top. Its aimed correctly and shouldn't be causing a problem! I cracked the fill plug to see if its overfilled.... nope... this is getting frustrating... Gave the mechanic a call who rebuilt the trans a 1.5 years and 1500 miles ago. "yea.... with the Limited slip we got for that car came with "a break in additive", we figured out that on another car that when the additive was used with swepco it would cause it to foam up. We never had a problem with just using swepco before so we just throw it out now. " so i guess a trans fluid change is in order...  but at least i know what it might be now!
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08-04-2006, 02:26 PM
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PRO Motorsports
Join Date: Nov 2001
Location: Burbank, CA
Posts: 4,580
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Swepco already has the needed friction modifiers to run with an LSD. No additive needed.
But it sounds like you already figured that out.
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'69 911E coupe' RSR clone-in-progress (retired 911-Spec racer) '72 911T Targa MFI 2.4E spec(Formerly "Scruffy") 2004 GT3 |
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08-04-2006, 08:34 PM
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Registered
Join Date: Dec 2002
Location: Long Beach, CA
Posts: 1,262
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What was the additive? I have an LSD in my 930, and it's noisy with Swepco. (Groans on turns.) I was going to add some GM LSD additive. I have seen this work to quiet the LSD in another 930. Does anyone know whether this is going to lead to foaming?
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08-05-2006, 04:23 AM
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