Quote from lasse.mynttinen@gmail.com on 19.02.25 at 18:42:37:

Which answer to you want to read? Did you check if its really the lower cylinder gasket and if so, did you try to seal it with dirko? If that doesnt work, you have to tear it apart and renew the gasket. What should be done additionally in this case has been written.

Hello Lasse,

before you open the engine, check whether the cylinder head bolts are still properly tightened.
For me the 4 screws come loose a little bit every 40-50,000 km.
This is probably also a reason why the cylinder head gasket tends to burn out, especially on the rear cylinder.
(... is a speculative assumption, since for me never burned out.)
Greetings Brunò