Blowin' Smoke! Please Help

this might sound a little crazy but I was messing with the timing and when I advanced it quite a bit (not sure how much cause it went far past the timing marker) but before it would ping, in fact it wouldn't ping at all, but it had about the same power and didnt blow as much blue smoke, but it didn't idle as well as it does when the timing is set correct, and it didn't cruise on the freeway as nice either. any ideas on why it wouldn't blow blue smoke as much? and thanks for the reply 73abodee, im gonna go buy some right now. would it be better to add with a fresh oil change or can i just dump it in as long as i dont overfill it?