Originally Posted by
cubewheels
Apply liberal (lotso) amounts of ATF (Automatic Transmission Fluid) on the drivetrain (chain and derailleur). No need to disassemble nor remove any part. I prefer to use syringe to apply ATF to minimize mess. One big drop on each roller and plates, big drop on each pulley axle and also big drop on each derailleur joints.
Be sure to put newspapers under the bike and between the drivetrain and the rear wheel. Back pedal slow to distribute, wait an hour, backpedal fast to fling away excess ATF and finally wipe off excess ATF with rug from the chain and derailleurs. It's the best method if you lack time and resources for an OCD-level drivetrain job!
ATF will degrease, clean, and lube the chain all at the same time!
Use Dexron III or higher ATF
Automatic transmission fluid won’t “degrease, clean, and lube the chain all at the same time”. Using it the way you are suggesting is only going to result in having oil all over the bike in places where you’d rather not have oil...like the rims and brakes. ATF is largely high molecular weight mineral oil and, as such, will stick to everything. There are far better solvents out there and far less messy lubricants. Dish soap like Dawn would be a better choice...and it’s a really poor choice.