My question is this. My 1984 190 D 2.2 na is running pretty dang nice. We just got back from jaunt to the coast and averaged around 35 mpg, ran smooth started with no hassles and even as we're starting to freeze at night it's starting just fine. I'm hoping to get the block heater relaced next weekend. I have no clue when the valves were last adjusted on this car...I haven't adjusted them before and my understanding is that the previous owner never adjusted them within in the last 10 years/150,000 miles. I'm not concerned about the mechanical aspect of adjusting them so...just git r done while I'm in there gettin the block heater replaced before the snow flies? Thanks guys,

Jim