I hate to burst your bubble there but it's also a lubricates too! Read the directions on the back!! Lubricates moving parts such as hinges,wheels,rollers chains,gears and other stuff. Cleans,grime,tar,adhesives,gum,tape,rust,water deposits. Protects against,rust,corrosion,like tools,firearms,sporting equipment. penetrates free stuck parts like nuts bolts,valves,locks. Displaces moisture to restore wet or flooded equipment such as engines,sparkplugs,powertools. I use it on my nitro motor when boat boat get flooded by water and the water gets into my motor.I pull the glow plug out to get rid of the water,but there little bit that doesnt get out,so I shot some WD40 to chace that out. Plus I talk to acouple of old timers and that what they used too. PB Blaster is more of a penetrate oil. Plus I use WD40 as a after run oil too and the motor seems to start faster. But there guys that are using car tranny oil or airtool oil too.[>:]