When we developed our Transmission Fluid Change Kits over 10 years ago, the MT82 Transmission Fluid Kit was the first kit released. We have offered the GT350 Kit for almost as long. We have combined our BG Syncro Shift Kit with your choice of BG Ultra-Guard Differential Fluid which allows you to perform a complete driveline service with 1 kit for your Tremec TR3160 equipped S550 or S650 Mustang that is equipped with Transmission and Differential Oil Coolers.

Improves the shift performance of the Tremec 3160 6 speed manual transmission used in the Ford Mustang GT350, Mach 1, Dark Horse, Dark Horse R from 2015 to Present. The OEM Automatic Transmission Fluid (ATF) Fill does not stand up to the heat and loads generated when these vehicles are driven hard in a Road Course environment.

Automatic transmission fluids (ATFs) and other light lubricants are often recommended for use in transfer case, manual transmission, and transaxle applications. Due to their light viscosity and low film strength these fluids do not fully protect all components. Manual transmissions and transaxles in particular, induce severe fluid shearing, greatly sacrificing wear protection.

BG Ultra-Guard® LS Full Synthetic Gear Lubricant is a universal, full synthetic API GL-5 rated gear lubricant blended to SAE 75W-90 viscosity. It provides the ultimate protection for driveline components, especially those requiring limited-slip function. It is formulated for increased thermal stability, improved seal performance, quieter operation, and unsurpassed protection against wear, pitting, and corrosion.

BG Syncro Shift® II provides exceptional thermal stability along with outstanding extreme pressure characteristics. The special additive chemistry contained in BG Syncro Shift® II does not sacrifice any performance characteristics as does ATF or other low viscosity fluids.

BG Syncro Shift® II was the foundational chemistry we rely upon. We have shipped thousands of quarts of this product to every corner of the world.
BG Syncro Shift® II Full Synthetic Gear Lubricant is specially formulated for manual transmissions, transaxles, transfer cases, and Haldex units. It is a full synthetic API GL-4 gear lubricant that provides unmatched film strength and wear protection. It provides exceptional resistance to mechanical shearing, has excellent low-temperature fluidity, and is safe for all steel, brass, and copper alloys. 
BG Syncro Shift® II is an API GL-4 gear lubricant blended to SAE 75W-75 viscosity and may be effectively used in all vehicles where engine oil, ATF, or GL-4 gear oil is specified as “service fill” for manual transmissions.

Compatible and suitable for use where the following are specified:

Ford XT-11-QDC (Spec. WSS-M2C200-D2)    

GM Auto Trak I and II

GM Versa Trak  

GM Synchromesh  

GM PN 12345349 (specification 9985648)    

GM Transfer Case Fluid PN 88861950        

Mopar PN 04874464, PN 05016796AB, PN 05016796AC, PN 05170055AB, PN 05179014AA, PN 68001758AA, PN 68089195AA, PN 68092630AA  

Motorcraft XL-12  

We include 4 - 32oz (Quarts) of Syncro Shift II, 6oz of MGC Additive, a fluid pump, 3 - 32oz (Quarts) of Ultra-Guard, a pump, dipstick, teflon sealant tape  and Color Instructions.