That's my take on it, as well...the oil thickening has got to affect the mds functionality in some way, but I really have no idea. The only catch I can think of where it may not apply as directly as we suspect is that the "thickening" isn't the typical kind of change that we liken to a viscosity change. It's more like a long-chain polymer "gooyiness" (a stringiness that fills the air space tolerances vs. fluid thickness with actual shear properties), rather than an actual change in viscosity (which I gather is the critical element that affects the mds lifters). I could be wrong on all of that, though. I was just curious if anyone has ever tried it.