Topped up the tank on thursday. Ran down to london on friday and engine was not sounding very happy. Stopped at services and checkd oil tank, still full. Alarm bells started so bought 1 litr of oil and gave a shot into the tank. Carried on down to the rally.
When I got there checked the oil tank again, now the oil was lower.
Somehow I mamaged to cause a vacumn in the tank so no oil could get through.
Got recovered back home on saturday came to work sunday.
Will need to strip it all down over the winter and find out exactly what I have destroyed.