[Healeys] Dave Dougan's overdrive part 2

[mike brooks]

Looks like someone has done some trials on different oils
http://mgtoronto.com/pdf/Tech/Overdrive_oil.pdf
 
They don't say though what
spec the 90 weight oil was. I have run 90 weight GL4 in my BN2 A type O/D for
4 years and my Triumph Dolomite Sprint J type O/D for 18 years with no obvious
problems. In fact my BN2 had automatic transmission fluid in it for a short
time and it would drop out of O/D when hot.
 
Mike Brooks