BG Syncro Shift II Manual Transmission Fluid

Specifically formulated for modern manual transmissions, trans axles and transfer cases. It provides exceptional thermal stability along with outstanding extreme pressure characteristics, shear stability and low temperature fluidity.


BG Syncro Shift II may be effectively used in all vehicles where engine oil, ATF or GL-4 gear oil is specified as "service fill" for manual transmissions.

  • SAE 75W-80 API GL-4
  • Made in USA
  • Sold by the quart

Typically, most Subaru transmissions require 4 quarts.

"Uncle Jon's Transmission Cocktail"


  • 2 quarts Redline Lightweight Shockproof Gear Oil
  • 1 quart BG Syncro Shift II Synthetic Gear Oil
  • 1 quart Motul 75W-90, or Castrol Hypoy C 80W-90

warning_symbolWARNING: Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to

More Information
Product Type Maintenance and Accessories
Maintenance and Accessories Transmission Fluid
Brand Flatirons Tuning
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