Back in my days(ancient history) we tried an experiment with STP oil treatment..the stuff thats as thick as..well its thick..very.
We added it to a 71 nova with a 6 cylinder. We where pulling it & replacing it with a 350 & had no use for the 6. We ran it for a few minutes & then drained all the oil out. Then we started it back up & tried seizing the motor up, after 15-20 minutes we gave up. It proved to me that STP helps seriously in lubricating bearings & cylinder walls. I haven't used the stuff in years & am not sure they even sell the product anymore but it did work. I had a 68 Firebird that while I was rebuilding the engine I used STP as a pre-lube & then added the rest of the can when I finished building the motor. After 1000 miles it went through 3 quarts of oil. I drained the oil(hot) & refilled with convetional oil & no STP & the rings where broke in within several hundred miles. Some snake oils do work but I would guess not many.
2005 Ranger FX4
K&N,Gibson,SCT,Screamin Demon Coil Pack,Performance 8mm Yellow Spark Plug Wires,Yellow Outer Wears Pre-Filter,Underdrive Crank Pulley,FAL Black Magic 180 EFan,170A Alternator,Optima,BullBar,Extang,DeeZee,Fabtech,CoverKing Seat Covers,Quicklift,MB Wheels-32x11.5x15 BFG's,Edelbrock,James Duff,Slotted/Drilled Rotors,Trick Flow,Mustang GT Hood Scoop,2006 Grille,ScanGauge II,Alpine DVA 9860,2X Infinity Reference 6810's,MTX Thunderform Subbox,Alpine MRP-450,Lots of Billet,