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kaiser · 13th May 2010, 20:24

Measuring the oil temperature is a bit extreme. Analysis paralysis!
Maybe we should just sit and think a bit as well.
I have read the piece, but I must say that it does not make a lot of sense to prescribe such accuracy, such limited temperature differences.
If you look at the thermal expansion of oil it is minimal within these temperatures eg. at 20 degrees 0.893 and at 40 degrees 0.881 g/ml. In plain english, this means that the oil has expanded by less than 1.4% with an increase of 20 degrees. Say 8 liters of oil in the box, and 1.4 % is 112ml, or, for each degree you are out, you have an error of 5.6ml.
Utter nonsense, even if it is an official Rover publication.

13th May 2010, 20:24	#6
kaiser This is my second home 75 Tourer 2.5 Auto, 1.8T, 75V8ZT Join Date: Jun 2007 Location: Johannesburg ZA Posts: 6,200 Thanks: 1 Thanked 859 Times in 613 Posts	Measuring the oil temperature is a bit extreme. Analysis paralysis! Maybe we should just sit and think a bit as well. I have read the piece, but I must say that it does not make a lot of sense to prescribe such accuracy, such limited temperature differences. If you look at the thermal expansion of oil it is minimal within these temperatures eg. at 20 degrees 0.893 and at 40 degrees 0.881 g/ml. In plain english, this means that the oil has expanded by less than 1.4% with an increase of 20 degrees. Say 8 liters of oil in the box, and 1.4 % is 112ml, or, for each degree you are out, you have an error of 5.6ml. Utter nonsense, even if it is an official Rover publication.