Overdrive Oil
gearbox oil
According to Laycock (who made the overdrive), you should use engine oil, according to Standard-Triumph, it should be gear oil. With BMC cars this wasn't a problem, their gearboxes were designed to use engine oil. In my experience, gear oil works fine in the overdrive, I know plenty of people who are equally happy using engine oil in thier gearboxes. Either way, avoid anything with lots of slippery additives - the overdrive clutch won't like it!
By : William Davies, 08-Aug-2005, 09:13pm on TSSC