Well, thats what we're trying to figure out here. Is it worth it? Is it a waste of time? I dunno. Its just an idea I'm throwing out for us to discuss.
Those viscosities are probably at 100C. I don't even think my trans will get anywhere near that on my 7 mile commute.
Here is
another study:
There is also this very interesting graphic. Note the tests were done at 100C transmission temp.
For reference (from
here):
Kinematic Viscosity @ 100°C, cSt (ASTM D445) = 16.6
Kinematic Viscosity @ 40°C, cSt (ASTM D445 =
129.7 87.6
The viscosity change from cold to hot is a heck of a lot more than 13%. So, I can only imagine, in the first few minutes of driving, we are seeing a pretty substantial hit simply from low transmission temperatures.
