Thanks Roger,
The bike was part of a collection for many years but I don't know how it was stored.
I will ride it until it looses compression. I hope that will be a long time and then replace the seals.
Thanks
Adrian

Hi. I am a new owner of an 1961 Ariel Arrow. I have been a club member for some years. This Arrow has only done 9000 miles I think that is a genuine milage. My question is Is it age or distance that wrecks the engine oil seals? Should I replace them? The bike seems to run ok on the orignals but for ...