I am now using synthetic oil, specifically for V Twins, and have been for a while. I got lazy and went a while without checking the oil level. When I checked it, it was barely showing on the bottom of the dipstick. The bike has about 14,000 miles with about 6,000 miles on this oil change. My question is this. Does a bike with synthetic oil usually use more oil than one with conventional oil? I am aware that due to my negligence, I may have done some permanent damage to the cylinder walls which will result in increase consumption with either type of oil. But hopefully the damage is minimal. I'll be checking regularly from now on.