Where is red (in celcius)?

Hi All,
Suppose someone were to put a more modern (Peugeot) turbo diesel into a Series III (24V ex-Dutch-military)...like I did.
I kept the original temperature sender and its mated gauge.
The gauge reads that it runs hot. I firmly believe this is accurate enough because the Peugeot engine is intended to run hot...ter.
The Pug's thermostat is an "88" meaning that it starts to open at 83 and closes around 93, I think, whereas the original Landy thermostat was much lower (76?) I believe.
DOES ANYBODY have a clue what the red region means in terms of degrees C???
"N" corresponds to 76 C?
It amazes me that this information is not Google-able. Not for me anyway.
Actually, I would like to know where 88 C would be (+/-) on the Series temp gauge, so that I can have an idea as to whether my Pug motor is running hot or not.
The military gauge also has an oil temperature gauge. Same deal, but I can't imagine anybody can tell me what the "N" and the red correspond to on the oil temperature gauge. I'm guessing that the Pug's turbocharger heats the oil well beyond what the original 2,25 motor would do. So, no big surprise there either.
Anyone???
Cheers,
Steve, in the NLs

Get a digital thermometer and find out.

Could depend on where the sender is on the pug block compared to the original, top/bottom, front/back? Getting an accurate reading is Always an issue in an engine swop. Find where it runs comfortably, even if it's in the red, and make that your norm, mine is just above cold, when it moves to the middle I switch the fan on.

As above. There's so much variation, don't forget tolerances and things have all dramatically moved because they're so old!

I put a 200tdi in my series 3, supposedly you have to get an adapter and use the series sender to make it read properly, when I ordered my bits it wasn't available so I connected the 200tdi one up as indication only....and it sits slap bang in the middle at normal running temperature!