Originally Posted by adamsoil
Haha call in the troops
If you are certain that pale oil and kerosine (the 2 main ingredients that makeup 95% of Motor Medic) are actually useful for cleaning out an engine, please provide an SAE study or other technical article showing it. Until then, I'm not putting a product with the viscosity of a straight 0 grade, a 136*F flash point, extremely high volatility, no additives, and no substantial lubricating oil film in my engine.
There's only one product I've tried that actually showed promise for cleaning up a dirty engine, and that's HPL Flush oil. Unlike the gimmicks, it's actually a fully formulated ester oil with an HDMO add pack in a 30 grade. After running it for 1,500 miles, the compression numbers improved on all 4 cylinders, and the engine was running smoother. That was confirmed also with a slight increase in idle vacuum verifying improved ring seal. This is the same premise as Valvoline Premium Blue Restore. That was done once at 225k miles.
Threads like this really make me disappointed in this forum. This is supposed to be a place of knowledge where you can see through the deceptive marketing and get to the root of what a product really is and does. Yet, the same nonsense myths and misinformation from shadetree backyard mechanics and Facebook is circulated as gospel around here also. If we are just going to blindly follow the marketing mumbo jumbo, then the whole premise of this forum is void.