Limited Slip Gear oil?


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A2Wing
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Limited Slip Gear oil?

Postby A2Wing » Wed Mar 18, 2015 5:06 pm



First of all, let me say that this is an amazing forum. I just finished registering as a member, so I'm new here. Just browsing around the Tech Talk, I've found the answers to questions I never knew existed. Questions that I would not ask, but boy, I'm sure glad I found the answers!

OK, let me get to the point.
I want to change the final drive gear oil. When I got home from the parts store, I saw that what I bought says "Limited Slip" . Will that make a difference? It is Castrol Syntrax Limited Slip 75W-90.
Thanks in advance. Now all I have to do, is figure out how to check back to see all the wonderful answers.....Oh Yeah...I'm talking about a 1983 GL1100 interstate. Only about 67K.



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ct1500
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Re: Limited Slip Gear oil?

Postby ct1500 » Wed Mar 18, 2015 6:23 pm

Limited slip oil will have friction additive in it for the clutch pack to minimize chatter.

Other than the clutch discs no difference from a conventional rear so it will work but it must have been a little pricey for that bottle.
Last edited by ct1500 on Wed Mar 18, 2015 6:45 pm, edited 1 time in total.
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Re: Limited Slip Gear oil?

Postby A2Wing » Wed Mar 18, 2015 6:41 pm

Thank you, ct1500. The price was the same as the price of the one I thought I was getting, $12. A bit less than the Lucas, same as Mobil 1, but of course, more that non-synthetic.
.

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Re: Limited Slip Gear oil?

Postby WingAdmin » Thu Mar 19, 2015 8:34 am

As long as the weight numbers are correct (which they are, 75W90) it will work. Gear oil meant for limited slip differentials have friction modifiers in them that are meant to work with the limited slip clutch plates found inside those types of differentials. In your bike it will have no negative effect.

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Re: Limited Slip Gear oil?

Postby f1xrupr » Thu Mar 19, 2015 3:44 pm

So, with friction mods, I wonder if it's actually better some how?
My exercise bike is a goldwing.

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ct1500
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Re: Limited Slip Gear oil?

Postby ct1500 » Thu Mar 19, 2015 5:41 pm

f1xrupr wrote:So, with friction mods, I wonder if it's actually better some how?


Negative, they only work on the organic linings of the discs.
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Re: Limited Slip Gear oil?

Postby f1xrupr » Thu Mar 19, 2015 6:29 pm

Aside from the organic prospective-focusing on a metal on metal...like car oil has friction mods. They say, no oil is like dragging metal on dry concrete, dyno oil is like dragging metal on wet concrete, synthetic oil is like ice skating, and friction mods are like hydroplaning. Friction mods are said to make oil be able to ride on itself. That's why we can't use it in a wet clutch-because, the oil can ride on itself-it almost alleviates engine wear once oil is flowing (kinda sad for gw owners).
That's the angle I was coming from.


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