Would anybody happen to know where the OBDII port is physically reading the oil temp from on a ScanGauge II?

 

Are you asking where the ECU takes it's oil temp reading at physically on the enigne?

 

Yes, that's my question. thanks!

 

I'm not sure where it's taken either...

 

A little perspective. F1 engines run coolant temps of 270F or more. As many teams claim they use Mobil 1, so oil temps in that range with good synthetic should be OK.

 

so i should change my oil on an F1 schedule? an F1 race may be about 150 miles ...

 

I actually never went into limp mode around 250F on the coolant... Just the warning and of course it went away when I drove more conservatively. But good to know that F1 fact.

I typically throw new oil in before I track anyhow...

 

F1 is 305k (odd distance), or 189 miles. Change your oil if you've been running for extended periods over 17,000 rpm.

 

Motor oil temperature should be maintained below 300°, can withstand short periods of up to 350°.

Remember, the turbo drives oil temps up very high while in the turbo compared to other areas of the engine. This is why turbo motors require specific oils with anti-coking chemistry.

However,
"Mobil 1 advanced synthetic motor oil provides outstanding high-temperature performance and is proven to protect at engine temperatures up to 500°F."

Consider that oil is a lubricant AND a coolant:
One of the reasons it is wise to keep oil temperature below 300° is that piston skirt/cylinder wall/valve/valve guide/turbo temps are high. You use oil to cool these critical areas. Cool oil = less wear.

Optimum oil temperature is 240°-270° for the purpose of cooling these vital parts, that temp is measured in the pan or other supply container/reservoir.