01-08-2019, 10:33 PM
As all this is being raised over again, over the decades my RP was always maintained to the book and filled to bottom of threads. Used in a city with very steep decents it always gave trouble with oil on the clutch until a modern seal fitted. (The best single improvement ever!)
Curiously the 1957 Austin Motor Company publication Austin Cars 97H843C pitched mainly at the late Ruby advises 1.5 pints...
On most gearboxes there is no load on the mainshft gears when these move relative to the shaft, but the Seven is different. This may have prompted a high recommended level. Racing, with alternating loads, may not be as onerous as never ending uphill grinds in standard cars. Those many using non original plain 1st/3rd shaft bush report no problems despite running low oil. Based on experience with other makes these components are first to show trouble if oil circulation dubious.
Curiously the 1957 Austin Motor Company publication Austin Cars 97H843C pitched mainly at the late Ruby advises 1.5 pints...
On most gearboxes there is no load on the mainshft gears when these move relative to the shaft, but the Seven is different. This may have prompted a high recommended level. Racing, with alternating loads, may not be as onerous as never ending uphill grinds in standard cars. Those many using non original plain 1st/3rd shaft bush report no problems despite running low oil. Based on experience with other makes these components are first to show trouble if oil circulation dubious.