Diff fluid change
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From: Charlotte, NC
Originally Posted by mikegarrison,Aug 27 2008, 03:14 PM
Just so we're clear on the original question:
You're imagining it.
You're imagining it.
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From: Illnoise. WAY downtown, jerky.
Originally Posted by SpitfireS,Aug 26 2008, 02:39 AM
The Torsen LSD uses friction to "lock".
Old oil may have lost its EP (Extreme Pressure) capabilities making the Torsen behave differently, especially coming out of corners under power.
This I have experienced myself, sudden understeer on small roundabouts.
It felt like the inner rear wheel pushed the car forwards in stead of around the corner.
As if it was locked too much with the outer rear wheel (making more revs)
At first I figured I had a steering rack problem or one tire with low pressure.
Nope.
Fresh oil (SAE 90 GL-5) "fixed" it completely.
The old oil came out black AND was pretty thin (cold!) compared to what went in.
Old oil may have lost its EP (Extreme Pressure) capabilities making the Torsen behave differently, especially coming out of corners under power.
This I have experienced myself, sudden understeer on small roundabouts.
It felt like the inner rear wheel pushed the car forwards in stead of around the corner.
As if it was locked too much with the outer rear wheel (making more revs)
At first I figured I had a steering rack problem or one tire with low pressure.
Nope.
Fresh oil (SAE 90 GL-5) "fixed" it completely.
The old oil came out black AND was pretty thin (cold!) compared to what went in.
You can use water, grape jelly, air or diff fluid. It will still lock just the same. Negating the need for lubrication, ofcourse.
The diff ONLY uses the oil for lubrication.
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From: 17 ft below sea level.
B serious Posted on Aug 29 2008, 08:29 PM
Yeah..... sure.
Worm gear by themselfs don't lock or do anything.
One typical thing worm gears do have is that they produce axial forces when they transfer power (torque)
Why don't you put air in your diff and show us how well it still locks?
Ohh.. wait... you need lubrication too?
So lets see... it will work with air but you still need to lubricate....?
No it doesn't. It uses a worm gear.
You can use water, grape jelly, air or diff fluid. It will still lock just the same.
You can use water, grape jelly, air or diff fluid. It will still lock just the same.
Worm gear by themselfs don't lock or do anything.
One typical thing worm gears do have is that they produce axial forces when they transfer power (torque)
Why don't you put air in your diff and show us how well it still locks?
Negating the need for lubrication, ofcourse.
So lets see... it will work with air but you still need to lubricate....?
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