Eaton did not design the Truetrac, they acquired it when they acquired Tractech makers of the Detroit Locker and Truetrac.
I strongly suspect this is a legacy recommendation carried forward.
Eatons test for function amounts to putting one wheel on a high traction surface and one on a low traction surface (but not NO traction) and nailing it, If your not sitting there doing one wheel peel it is working.
I really don't even know how you would test this in an instrumented way, I don't think you can do breakaway torque like a clutch type limited slip, I'm willing to listen to suggestions on what might be a valid test other than Eatons.
I'm curious about this shop that wants to use the Amsoil because it has FM and not using FM in a Truetrac is the one thing that there seems to be fairly universal agreement on.
I strongly suspect this is a legacy recommendation carried forward.
Eatons test for function amounts to putting one wheel on a high traction surface and one on a low traction surface (but not NO traction) and nailing it, If your not sitting there doing one wheel peel it is working.
I really don't even know how you would test this in an instrumented way, I don't think you can do breakaway torque like a clutch type limited slip, I'm willing to listen to suggestions on what might be a valid test other than Eatons.
I'm curious about this shop that wants to use the Amsoil because it has FM and not using FM in a Truetrac is the one thing that there seems to be fairly universal agreement on.
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