What LSD fluid do you use for your street ti? As the title says, what LSD fluid are you using in your street ti? I was lucky enough to pick up a small case 3.45 LSD from Dan and will plan to install it this weekend. I looked through various threads, but there was no clear answer other than fluid weight. I figure our responses can help other folks with similar questions in the future. I see 75-140w for LSDs, although a 75-110w is used by some folks to keep heat down. 75-90w seems to be the spec for non-LSDs, although some folks are using it in their LSDs without apparent issues. Dan mentioned he used Redline, which I have used in my non-LSD diffs. Not sure if a LSD modifier needs to be added to Redline. What do you use? Whatever you use, do you hear any difference when you are driving? I ask as I tried Royal Purple when I could not find any Redline at one point in another non-LSD BMW and I experienced a whine when underway. Not sure if was due to the fluid change or if the properties were different than the BMW fluid. I went back to BMW fluid and the whine went away. Never was really sure what went on there. Also, can you mention if you are running a LSD or a Torsen diff and if a LSD, is it a small case 3.45 or a E30 or other variant? Anyway, thanks for your feedback! Rich :cool: |
I'm using Redline 75W90 in the LSD on my '95, according to bavauto.com it has the friction modifier already in it mine whines a bit but it hasn't ever gotten worse |
+1 for Redline. |
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Jonathan at bimmerdiffs has stated that redline "shockproof" fluid causes LSD failures. Not sure what fails but he has mentioned that in other threads. I've mostly used Mobil 1 and amsoil both have held up well at ~20k mile oil change intervals. 75w-110 is what I've been using in the Ti with small case LSD. |
Hi Dave! Yes I read the same threads for Redline "shockproof" which caught my attention. I wondered about the use of 75-90w for our LSDs. there is a speed shop in town I'll head over to later this week and they carry Redline, Royal Purple, Valvoline and a few others where I can read the labels. Old school... :) I'll open up the case hopefully this evening and inspect the inside. Thanks again for all responses thus far. :cool: |
For those of you who mentioned you were using Redline for your duffs, were you using the GL-5 gear oil, or the Heavy Shockproof gear oil? Thanks! 😎 |
motul gear comp 75W140 ( blue color) for my 188( medium ) 3.73 LSD from a e30 |
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