carfreak85 Posted November 12, 2005 Share Posted November 12, 2005 I want to stick this LSD in my wagon, but I want to change this mystery fluid out for some new stuff. The dealer doesn't sell fluid for the legacy's viscous diff and the parts store just has GM, Chrysler, Ford stuff. What do you guys suggest I do? Quote Link to comment Share on other sites More sharing options...
nipper Posted November 12, 2005 Share Posted November 12, 2005 If it is what i think it is, the LSD is a viscous coupling and not a LSD like we are used to thinking (cone clutches or clutch pack). that mystery fluid is silicon and made to last the life of the differntial, its not to be changed. nipper Quote Link to comment Share on other sites More sharing options...
carfreak85 Posted November 13, 2005 Author Share Posted November 13, 2005 Are you sure? The way I understand a viscous differential works is by shearing those long silicone molicules in half to get the desired limited slip characteristic. This would mean that the fluid would eventually break down and the diff would not work a well. Anyone have a FSM who is willing to clear this up? Quote Link to comment Share on other sites More sharing options...
Dr. RX Posted November 13, 2005 Share Posted November 13, 2005 The viscous coupler does not use the diff oil for fiction, the coupler has a viscous fluid sealed in it. Use any 75/90W oil, but I understand that synthetic is better, so maybe try Redline Shockproof. Quote Link to comment Share on other sites More sharing options...
carfreak85 Posted November 13, 2005 Author Share Posted November 13, 2005 so maybe try Redline Spockproof. Spockproof huh? Watch too many episodes of Star Trek lately? Thanks for the info though, no wonder they didn't have any fluid at the dealer! Quote Link to comment Share on other sites More sharing options...
blackbart Posted November 13, 2005 Share Posted November 13, 2005 The earlier LSD's (like the 3.70 LSD) used special LSD fluid, the newer VLSD's use regular fluid, the VLSD portion of the diff is sealed. Quote Link to comment Share on other sites More sharing options...
carfreak85 Posted January 22, 2008 Author Share Posted January 22, 2008 The earlier LSD's (like the 3.70 LSD) used special LSD fluid, the newer VLSD's use regular fluid, the VLSD portion of the diff is sealed. So now that I have changed differentials and have an EA82 clutch type LSD in my wagon, does it need a special fluid? Quote Link to comment Share on other sites More sharing options...
Caboobaroo Posted January 22, 2008 Share Posted January 22, 2008 yup you need to get some LSD additive, I think you can get some from the dealer IIRC. Quote Link to comment Share on other sites More sharing options...
slideshow86 Posted January 22, 2008 Share Posted January 22, 2008 Wondering this myself. Is kendal required? I found a few posts of people trying 80-90 w/ additive but w/ no report back? Quote Link to comment Share on other sites More sharing options...
porcupine73 Posted January 22, 2008 Share Posted January 22, 2008 If it is not the viscous style lsd and needs the friction modifier, maybe you want to try the Subaru gear oil? Or maybe this stuff is for the STI's... Quote Link to comment Share on other sites More sharing options...
carfreak85 Posted January 22, 2008 Author Share Posted January 22, 2008 Can I use the friction modifier that I bought at Schucks, or should I use Subaru brand, or maybe redline oil? Quote Link to comment Share on other sites More sharing options...
slideshow86 Posted January 23, 2008 Share Posted January 23, 2008 Thats my question as well. But EVERY manufacture claims only theres will work. Origionally I had a diff guy till I started doing them myself for my drift car. He used mainly this certain type of lsd additive? Always worked for me. I actually was debating not dropping it in while reading the SUBARU ONLY FLUID. Not even just LSD ONLY, so some moron at jiffylube doesnt swap fluids. I am having issues so I havent really tried it much But ill let ya know if it fails? Quote Link to comment Share on other sites More sharing options...
carfreak85 Posted January 26, 2008 Author Share Posted January 26, 2008 Can I use the friction modifier that I bought at Schucks called Equa Torque, or should I use Subaru brand addative, or maybe redline LSD specific oil? I'm going to be refilling the diff this weekend. Does anyone have any experience with different brands of LSD addative and want to offer any advice? Quote Link to comment Share on other sites More sharing options...
Bigbusa Posted January 26, 2008 Share Posted January 26, 2008 I wonder if this is the same mystery fluid that subaru put in the power steering system on the XT6? Quote Link to comment Share on other sites More sharing options...
carfreak85 Posted January 29, 2008 Author Share Posted January 29, 2008 So I decided to put in the Schucks stuff. We'll see how it goes and I'll report back if anything goes wrong. Quote Link to comment Share on other sites More sharing options...
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