It's the size of the particles that make the difference as well as what they are suspended in. When I emptied the containers of the Synlube they pretty much were clean at the bottom. I also tried a little on a cheep 12 volt air compressor - it made a hugh difference after it worked in a little - draws almost half the no load current. The Slick50 gear lube I had sitting around for about 20 years had a lot of white PTFE at the bottom that I had to mix back in with an ultrasonic cleaner. Adding the Slick50 to the tranny oil added about 5mpg to my test loop run - guess the original gear lube in the xB needed some more slipperyness.
What did they have in there stock- valve grinding compound?
Apparently enough stickyness to make the syncros work well but took a lot of power to turn it. I heard a lot of xB owners were changing the tranny oil and getting much better performance.
DracoFelis 
Hybrid Mode
