cleaning your bike chain
So I'm new to bike maintenance, and I bought a chain care kit, made by finish line, and my question is... I'm cleaning a very old chain, which probably hasn't been cleaned, and barely used, in 20 years. I've run the chain through the cleaner, and there is so much old grease on the gears that the chain just keeps getting greasy. I'm now using a teflon based lubricant, so should I clean the old grease off the gears and let the teflon be the only lube, or should I leave some of the old grease on?