companion slider noisy/ doesnt slide well

I don't own a slider but have helped several at campgrounds whose wouldn't slide either. I mixed an old concoction made up with engine oil, transmission fluid and some cleaning solvent we got from a auto repair shop. sprayed that on all moving parts and let it set for an hour or so and kept moving it back and forth and continued to apply more as needed. We sprayed White Grease into the rollers afterwards and so far they are still working. The concoction I made up was what we used to make for frozen bolts and nuts when I worked in a repair shop where we repaired cars, trucks and anything that would make it into the door. Some were so skuzzy one would wonder what they did with them. If you can find it PB Blaster works real good also. About same thing as Blaster Penetrating Catalyst B92E talked about.