3:1 Mineral Spirits/Regular Motor Oil (5w-30). People like to use Mobil1, cause of some additive that helps retention hoopla. Honestly its mostly all the same. I read somewhere that a dude was using just straight 0-20w for those new hybrids, maybe a 2:1 ratio?
Don’t use Moto chain lube, smarter people than myself have said it’s designed for much higher speed applications, and is way too thick and sticky for bikes.
If you think these lube companies are mixing exotic oil concoctions just for your precious bike chain you’d be let down. They just mix, add-in or use whatever large industries as laying around on the shelf. The only way its worth their time is to overcharge for the most basic and simple to produce product. The same way the industry just rebadges Moto Suspension fluid and charges your triple the price, or how Sram Butter is rebadged Slickoleum at three times the price, red Sram grease is rebadged military grease. They put more thought into their label than the actual product.
But if you feel like mixing mineral spirits and motor oil might result in a chlorine gas cloud, you could always just get Tri-Flow. It’s usually the cheapest, and best lube on any chain lube shelf.