Factory Names
In the 1950s and 1960s many manufacturers began to apply brand names to their LSD units. Packard pioneered the LSD under the brand name "Twin Traction" in 1956, becoming one of the first manufacturers. Other factory names for LSDs include:
- Alfa Romeo: Q2
- American Motors: Twin-Grip
- Buick: Positive Traction
- Chevrolet/GMC Positraction
- Chrysler: Sure Grip
- Dana Corporation:Trak-Lok or Powr-Lok
- Ferrari: E-Diff
- Fiat: Viscodrive
- Ford: Equa-Lock and Traction-Lok
- International: Trak-Lok (clutches only) or Power-Lok (clutch and ramping engagement process)
- Jeep: Trac-Lok (clutch-type mechanical), Tru-Lok (gear-type mechanical), and Vari-Lok (gerotor pump), Power Lok
- Oldsmobile: Anti-Spin
- Pontiac: Safe-T-Track
- Porsche: PSD (electro-hydraulic mechanical)
- Saab: Saab XWD eLSD
- Studebaker-Packard Corporation: Twin Traction
- TVR: Hydratrak
- Yukon Gear & Axle: Duragrip
Read more about this topic: Limited-slip Differential
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