@ F6C : I saw that missing seal which induced an extra oil filling.
It is scary
On my side I checked about 50 times in 11000 km the oil level to keep it above the minimum, mot at middle or full level) using:
- the classical method (check level of oil on the stick, motor cold) then
- the standard Triumph method (90 seconds starting motor @ idle, then motor switched off, then waiting for 3 minutes, then measurement of level of oil),
There was no difference of level or a very small one (minus 2 mm). So I am confident in the data.
But I am sure that I added 2.6 litres of oil in 10 475 km. And I do not think that this oil is still inside the motor.
According to some issues encountered by other owners, I should be happy and I am. Nevertheless I was not ready to reach oil consumption of an old British car as I had very low oil consumption with my previous Rocket 3 and Sprint 900.