Donuts in other cars

["Dr M.G. Salter" <mgs5@domain.elided>]

I had a Triumph 2500 in the 1970's with a donut in the drive shaft. I 
uprated the engine to a TR6 one and never changed the donuts , 
twisted the things into oblivion!! I think they're supposed to quash 
driveline shunt.
Mike

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