Just a quick point Danno,
Every time I start a Vincent, I take the filler cap off and look in the hole to make sure
The oil is returning, With the engine running the oil should squirt back in the tank ,
In fits and farts, That's how they work !,
You should be OK with just changing the oil,
But after an engine rebuild we often get an air lock in the pipes and NO oil return !,
We should really PRIME the pipes with oil, After a BIG rebuild.
Good Luck, Bill.
Every time I start a Vincent, I take the filler cap off and look in the hole to make sure
The oil is returning, With the engine running the oil should squirt back in the tank ,
In fits and farts, That's how they work !,
You should be OK with just changing the oil,
But after an engine rebuild we often get an air lock in the pipes and NO oil return !,
We should really PRIME the pipes with oil, After a BIG rebuild.
Good Luck, Bill.