TLC Norway
woodwelder
How did this go? Are you back up and running?
Symptoms lead me to belive vac issues, blowby or turbo. They all often interact
Its not unusual for the 2LT to have lots of blowby by that age. Unscrew the oil fill cap, put your hand over the fill hole and feel if there is lots of pressure. might have to clamp the small vent hose going to the intake.
Should still run strong, but can be slightly altered with a heavier oil, depending on your climate and usage.
Symptoms lead me to belive vac issues, blowby or turbo. They all often interact

Its not unusual for the 2LT to have lots of blowby by that age. Unscrew the oil fill cap, put your hand over the fill hole and feel if there is lots of pressure. might have to clamp the small vent hose going to the intake.
Should still run strong, but can be slightly altered with a heavier oil, depending on your climate and usage.