Equipment/Supplies - How long does watch oil last in the bottle?

I have 10 years old watch oil in a bottle.I seems thick? How long does watch oil last in the bottle?

5W-30 Full Synthetic Oil in Synthetic Oil

ProTecta Needle Oiler 1/2 Ounce Bottle. Precision lubricating Oil applicator : Tools & Home Improvement

Sewing Machine Oil Top 10 Questions Answered

What's Inside That Bottle of Oil Really Does Make a Difference

2-5 Quart (4.73L) Bottles Advanced Wear Protection For Extended Engine Life Maximizes Fuel Economy

Kirkland Signature 0W-20 Full Synthetic Motor Oil 5-quart, 2-pack

Mineral oil - Wikipedia

Super Tech Gear Lubricant is a multi purpose, long lasting, and durable lubricant for all your mechanical needs. The heavy duty extreme pressure formulation protects against rust, foam, high temperature, and corrosion of copper or bronze bushings. Super Tech Gear Lubricant works great on manual shift transmissions, conventional differentials, rear axles and steering boxes found in passenger cars, trucks and farm tractors.

Super Tech 85W-140 High Performance Gear Oil, 1 Gallon

Oils to start my kit with .advice appreciated - New to watch repair ** Safe Zone For Learner Watch Repairers ** - Watch Repair Talk

Water dispenser - Wikipedia