A repair may just reveal more issues after it's working. If you plan to stay in the home for a while and the opener is over 5 years old, it may be a great time to replace it. The quality of the existing opener should also be taken into consideration.
Grease has trouble reaching these parts of the garage door. Silicone is best used in accompaniment to grease because it doesn't provide as much friction resistance, but can reach places that lithium grease can't. It also has a longer life and is resistant to temperature and moisture. Feb 18, 2022
First, know which parts you have to lubricate. These should all be included in your regular maintenance schedule. Springs: The springs that help lower and lift your garage door should be lubricated regularly. You will most likely have torsion or extension springs.