I changed the oil in my 190D but I am unsure how much to put in and I do not have the owners manual. I put in 4.5 quarts and it did register on the dipstick, but I also do not want to overfill. How much should I use?

Thanks

 

I have never owned a 190, and @ 6'5" I may never, but I would imagine it would take 6 qts. I would keep adding oil, a 1/2 quart at a time, and monitor the dipstick.
Good Luck with what seems to be a new ride.