funny, i just lubed the track on my garage door because i had to turn the up force knob to almost full the week before to get it to go up.
mine is a craftsman chain opener, the chain pulls the door and the chain really doesn't need any lube. Where mine needed lube was on the metal track that the thing slides on, don't know what to call it other than the metal piece the lever coming off the door clicks into. It looks like it just slides along the track which is a metal I-beam, and the slider is a C shape. I cleaned the track with paper towels and denatured alcohol, looks like it was some sort of dry film lube on there that was all done. I used a left over tube of lithium-complex wheel bearing grease liberally, than open/closed the door 5 times to spread it and wipe up what grease was pushed away. I also had some poulan bar & chain lube that I've had for a chainsaw, that was real stringy type of oil (brightstock? ). I wiped that on by hand onto the chain, and also dabbed it on the track for some extra lube, worked really well. Quieted down the opening considerably.