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Old 03-22-2013, 04:46 PM   #12
Scooby Specialist
Member#: 136296
Join Date: Dec 2006
Chapter/Region: TXIC
Location: Midtown, Houston, TX
2005 STi


Viscous is just about as useless as an open differential. It's torque transfer very very low, so low it won't actually make any noticeable difference. It uses the heat from slip to increase the viscosity (thickness) of the fluid, which in theory the thicker fluid will force torque transfer. There are a few problems with this - you need to be spinning the wheel pretty aggressively to heat up the fluid and force the torque transfer - and once the fluid heats up, the amount of torque it can send is still very very low.
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