Oil Teperature Indicator

[Bob_Roller]

Those temperatures, are with an OEM BMW oil cooler installed .

The temperatures before the cooler installation, were 75-100 F. (24-38C.) higher .

[Barry]

The dipstick oil temperature indicator shows on average, 275-300 F.  (135-150C.) under these conditions .

I think I'm as shocked as Lou at those temperatures and I can see why you might need a gauge.

A gauge would depress me for the opposite reason because I know that I would rarely get it past 80 C

[Bob_Roller]

I'm not quite sure how 'accurate' the oil temperatures indicated on the dipstick, as it's only getting splash, or spray, not sitting in the oil itself in the sump .

I checked the accuracy of the dipstick indicator itself, and it's within 5 F. (2C.) of all of the graduations on the indicator face .

So I know the dipstick indicator, is not wildly inaccurate .