I just pulled my oil sample, Schaeffers supreme 7000 15w40, from my hot engine through the dipstick tube. I immediatly shot a temp reading(using my raytec temp gun) on the hot oil on the dip stick 147degs, then shot the temp on my sample bottle, 144 degs. I had just come back from running around and pulled up on some ramps and left the car idling with the a/c going while I got the hood up and everything in place, then shut off, pulled the stick,shot temp,placed tube into the oil down the stick hole, pulled sample with plunger unit, and shot the temp directly in the bottle. So there was very little time for the temp to drop by much if any. The reason I deceided to do this was I have always wondered what is the sump temp on my oil and interesting enough I find it is actually lower than I would have expected. You'd think that if the engine is producing such high temp's throughout, it would be much higher. I believe this kinda shows that the high noack that so many people worry about is really not near as much of a concern with the oil in an engine as the temps do not cause the oil to get no where near the noack #'s. Oh I know you amsoil boys will jump all over this, but I see this as pushing an oil to an extreme in bench tests and that it doesn't corelate to actual temps an engine maintains in an engine cause if an engine was producing oil temps up to and over 300degs, you'd see a lot more engines not holding up with all these lower grade oils with lower noacks. Just food for thought. Another thing I now have done is taken out my supreme blend with the PAO and M1 filter, and replaced it with Schaeffers straight moly bond mineral based 15w40 oil without the PAO and with a (get this) FRAM filter. ... Ok, why? Thought maybe I'd see just how well the oil analysis reports come back on 4k drains between the two since both use basicly the same additive package and I want to see if this oil can do like the blend and produce simular wear #'s. This is to produce a result based on base oil changes only and by going with a fram filter instead of m1's is to see how it does on the oils merit moreso than the filters. nuff said.