| >& do you mean I should have put non-detergent oil in my TR4 gearbox because
| >of problems with the syncro rings???
|
| Rumor has it. Apparently some synchronizer rings are coated with
| a compound that the detergent removes, which accelerates wear. I
| seem to recall that Alfas are the main victims of this user error
| and I don't know whether or not British cars succumb to it. I
| used detergent Castrol 20W50 oil in my Midget's gearbox, which
| eventually lost first gear (no synchros on that one), but that
| was at 11 or 12 years of age.
|
I have heard that once converted to 90wt it's best to stick with it.
Going back to 30-50 after many miles on 90wt may not be a good idea
unless you are rebuilding th box.
While I would not knowingly use detergent oil in a gearbox, I am
skeptical of the coated syncro theory. Do you have any additional
information?
regards/dick nyquist|
|