Green Oil Wet Chain Lube was developed out of a frustration. Other lubes were petroleum based, mostly contained PTFE and even said 'Dangerous for the Environment' on the bottle. Green Oil is a biolubricant. It's made from plants instead of petrochemicals. This all conditions lube prevents rust, reduces wear, is good for 125 + Miles between applications is PTFE free and 100% biodegradable! Apply to the inside of your chain for one length, spin the cranks. Wipe off excess with a rag to keep the chain nice and clean - you only need the oil betweent the links where the friction occurs.