Egg-Zackly. Most often times, the tension springs are problematic. Soak them at he said and use a good quality oil (I am a synthetic homer because it tends to not evaporate with time) here.The tension springs over the door have a tendency to get surface rust which eventually weakens the springs . Once a year take a rag and douse/soak with light machine oil like 3in1 or similar . Rub the oil onto the springs and leave it .
Door rollers you can purchase a variety of spray garage door lubricant from big box or hardware stores . Spray a shot or two on each roller wheel . You can use that same lube on the opener chain . Do the maintenance once a year and you should be good to go for a long time .