Yeah, I have been looking at tstats because I would like to get them up a bit as there is a little, condensation under the breathers. Not enough to cause issues. I just make sure to get them up as high as possible once a weekend. I leaned the engines 2 jets sizes and that got me up to the 160-180 range which is whre the condensation was not bad. Before that I had actual slight cheese which I don't like. Nonetheless, these temps are good because I spent yrs battling high oil temp issues, even with these coolers. Even took the mains out on one engine when I got the temps up over 300f. I'll take them cold over that any day, plus I can run as hard as I want and not have to cool them down. Before I would have to slow and crack the hatch and all that jazz.