Originally Posted by wolfejohne
I have never used a gear diff and have some simple questions.
1. Would 30KW from Mugen be close to the Hudy oil?
2. Have you found changes in temperature require a change oil viscosity?
We have temps swings from 40 to 100 deg F during the year.
3. What range of oil should I have when I go to the track?
4. Do you seal the diff with something? And how often do you check the oil in the diff. Any helpful suggestions on filling the diff.
5. How long will the diff last before it requires a rebuild?
Thanks in advance
John
1. Don't know, but the thicker diff oils seem to be more comparable than the shock oils.
2. One of the good things of silicone is that the viscosity is quite constant with temp.
3. 20k - 50k would be a good bet I guess
4. The serpent diff is sealed by three O-rings. 2 on the outdrives and one between the two halves. It should be almost leak free. A tip is to use a little bit of very thick sticky grease on the o-rings at the outdrives (lightly coat the o-ring and then install).
5. The gears last a long time. I'm still using te first set since the EC in Halifax (august). Also the outdrives seem to wear less than the ball diff. I check the diff when I do a teardown of the car and then I will make sure the amount of oil is still sufficient.