Track Junkies, what sensors do I need?
#16
Nordschleife Master
I for one would want to know the oil temp supplying the engine rather than the temp of oil returning from arguably the hottest part of the engine. As mentioned i dont see how this is helpful.. high temp for the oil supply to the engine is a better and more accurate warning indicator.
#17
Rennlist Member
#18
Rennlist Member
The problem with that is that it will read higher than the average sump temperature, since it is coming from the turbo. Nearly all references to oil temperature are sump temperature. Oil will get significantly hotter inside the engine. When we tell our customers the safe oil temperature range, we are speaking of sump temperatures.
Is that true? If it is, is it just the high temperature that's harmful, or does it have to be the high temp with a certain amount of shearing load? E.g. if the oil return from the turbo has the potential of damaging the oil, then, yes, you'd want to read that temp. But, if it's the high shear load from the pistons on the cylinder walls, in conjunction with heat, that are really the damaging factor, then the oil pan should be the place to read temps.
The only reason I think you'd want to read inlet oil temp (via an oil filter sandwich plate) would be to compare it with the sump temp to see how efficient the oil cooler is.