After extensive MSDS searching I've discovered that Versatrak fluid is actually Castrol 75W-140 SAF-XJ gear oil.
I have successfully eliminated RDM groan in my 2002 Chevy Venture by using a synthetic 75w140 gear oil that has friction modifiers already included.
MSDS for comparison.
Versatrak (BOT 190 M 1) MSDS
http://msdspds.castrol.com/ussds/amersdsf.nsf/Files/09D30AEA3FF1BC7180257960005C192F/$File/081946BOT%20190%20M%201.pdf
Castrol 75W-140 SAF-XJ MSDS
http://msdspds.castrol.com/ussds/amersdsf.nsf/Files/776BBAF88D425FAD802579500053C02D/$File/073327Castrol%20SAF-XJ%2075W-140.pdf
I have successfully eliminated RDM groan in my 2002 Chevy Venture by using a synthetic 75w140 gear oil that has friction modifiers already included.
MSDS for comparison.
Versatrak (BOT 190 M 1) MSDS
http://msdspds.castrol.com/ussds/amersdsf.nsf/Files/09D30AEA3FF1BC7180257960005C192F/$File/081946BOT%20190%20M%201.pdf
Castrol 75W-140 SAF-XJ MSDS
http://msdspds.castrol.com/ussds/amersdsf.nsf/Files/776BBAF88D425FAD802579500053C02D/$File/073327Castrol%20SAF-XJ%2075W-140.pdf