Mark,

    That is the kind of "Real World" info we like to hear.......Particularly

since there is some difference of opinion as to the need or suitability

for the use of the "TES" seals among the group..........

--
Kelly Troyer

My 20B has the stock O-rings, and I’ve had the engine exit oil up to 235-240 a number of times, coolant temp to 200F – never for very long - no issues. I figure a max short duration limit on the pan temp is 250. Max on oil return, about 220F.  Cruise below 190.

I’m installing an oil/coolant exchanger looking to reduce the oil temp by about 15 degrees.

I had done all my analysis around using a Setrab TOC300, then when ordering found they have stopped making it.  Anyone have one lying around?

Al