Hi.

Just about to order some Autometer Ultra-Lite gauges to complete my gauge set. They have two models for their electric oil temperature gauge. One goes from 100 to 250 ºF (~37-120 ºC), and the other goes from 140 to 300 ºF (~60-150 ºC).
Which one should I choose for my MY99? Will the sensor location influence the choice? I was told the oil temperature sensor should be placed near the 3rd cilinder, where tempeatures are generally higher?

Cheers,

Paulo

 

Anyone?

 

The temperature will vary between sump and above no 3 cylinder for instance. It is the changes in the temperature that you need to be aware of once you have got used to it. Above no 3 is likely to show more sudden changes while sump temps are obviously less localised. A major consideration in locating the sender is its physical size. Will it sit into the oil flow and not 20mm away in which case it is measuring the temperature of the block. Sorry, I am not familiar with the Autometer probe.
Above no.3 cylinder is easiest if it will fit or an adaptor to the sump plug from Le Mans or similar. Problem with that is that the sender and capilary are disturbed with every oil change so care is required.
Other than that, sump off and do it properly.
Oil companies say their oil is OK up to 140 C. I run on track, up to 125 C and then come in but in daily driving it is usually 80-90 and sometimes 100 + but it depends on oil viscosity, ambient temperature and how much power is being developed.
A scale to 120 C might do but if you have a hot running engine or go on track it is not enough.

 

Thanks for your answer Harvey. That was exactly what I wanted to know.

Just found another Autometer gauge that a wider range, from 100ºF to 340ºF, so that should cover all possible situations.

Cheers,

Paulo