That combo is more oil than you are likely to use in a lifetime, let alone on three locomotives. Either 106 or 108 will work fine on your locos. You only need a drop or two on the gears. Running the loco will spread the tiny amount of oil where its needed. By the way, one characteristic of clock oil is that it does not spread. A drop on a clock bearing stays intact for years. Not good for model trains. Neither is too much oil.I'm going to order the 106 and 108 combo. Soon as my hand heals from surgery I'll get to work on the engines. Got two N scale and an HO to clean.
Traction Fan 🙂