yes very bad.of course seeing 240 on the gauge isn't so bad at the idot light port as it would be at the stock sending unit location,but by the time i get to the top of a long grade,just moderately grossing 14k (running light/medium as i call it) she's climbing fast! thank the maker iv got the electric cooling fans,so i can turn 'em on soon pre hill.i don't have a oil temp gauge (this is being rectified as well.will be here Monday) but i figured this was the reason for the quick coolant spikes.so i pulled right over a couple times now and shot the pan with my temp gun.sure enough oil temps up over 260 degrees at the base of the pan.
that's asking way too much from any coolant system.this oil cooler should really smarten her right up again.