Engine Oil / Coolant Warning Light Temp

[Spikehaus]

What would be the normal temperature for the oil & coolant system over heat warning lamps to display? I am setting up my Koso Digidash. They popped on today after 2 laps around the car park!

[flyerncle]

80/90 deg usually for water, oil 100 ish .

[robo]

I suppose if they are high temp warnings you dont want them set any where near the on/off range of the fan stat, so really the water one would want to be set a few degrees before boiling which would depend on the pressure cap. I reckon for a high temp warning 110 and the oil is happy up to 120ish so set that to 115. any less and the warning lights will keep flashing up . Just my opinion.

Bob

[baz-r]

coolent is presurised and will not boil at 100deg and it could be normal to go up to 110deg depending on your system and rad cap pressure.
i would start at 110deg for your coolent and 90-100 for your oil
i cant see your engine will go any higher than that in normal operation

a chap at work who does all the contract work for our engines at work said the normal diesel 15w-40 we use was still working fine at 180deg in some of thair lab tests when thay where looking into the quality of oil we use.

[Spikehaus]

I think I will run with these temps to start with and see how if it goes. they seems pretty sensable and logical. I am worried about the have such a small clio radiator with such a large V6 engine, although I guess the modern radiator is much more effient that the old sierra one. Time will tell..

[baz-r]

there is a merc rad for the 1800-2300cc 190e thats smaller and thicker
that im running

its still alloy core but is 45mm thick and around 300x300mm if its not man enough