ok i made that up but,Some mufflers come with a small hole to let water drip out and some dont.So my turbo mufflers I just got does not have this hole.anyone have knowleadge on this hole good or bad.
The combination of combustion along with moisture in the exhaust system and engine oil combine to create a mild hydrochloric acid. In the case of exhaust systems if this is not drained or run long enough for all of the moisture to be evaporated causes corrosion to occur. A small hole drilled at the low point of a muffler is a good idea. In the case of engine oil, same thing. The oil has to get hot enough to evaporate the moisture from the engine oil. Another reason to not skimp on basement bargain brand lubricants. Short drives are bad! Those living in areas where humidity is low, it is not as much of a problem.