Running rough and smokes bluish gray color smoke coming from the exhaust pipe

Changed motor oil and filter.
I put in 5 quarts of oil 5-30w.
Did not wanted to started until I go to town and get one more quart of oil.
Two days later got it done.
Started up but didn't want to run as before I change the oil.
Run rough and smoking at the tail end pipe.
Run it that way for 30 miles and ran okay, every time I start, runs rough and smokes bluish grey's smokes.