Today I decided to finally do a diesel purge and change the fuel filter and pre-filter. I even replaced a few fuel lines as the old ones were less than optimal. While I was under the hood I would check for blowby... sure enough I have some. The blowby isn't too bad but there are some puffs of smoke. I am going to assume that some blowby is "typical and acceptable" for W116s with 100,000+ miles. With this in mind, how much is too much?