I had to replace the valve cover gaskets on my 1980 450SL. During the operation I noticed that both covers had what appeared to be hairline cracks in them. The left one was the worst, next to the oil fill cap. At first I thought that these were part of the castings but they aren't. The car only has 45,000 miles on it and the valve covers have never been off of the car.
Thoughts? Is this a problem that should be fixed? There does not seem to be any oil leakage but I am perplexed why these would crack.
1980 450Sl "Black Beauty"
2002 C230 Kompressor "Spicy"