Oil temp at high speeds?

[Toxik-Signal]

Just a quick question I've been wondering about for a while...

Whenever I set off with a cold engine, I tend not to rev it over 2000rpm until my oil has heated up to normal running temperature.

Something I have noticed is that the oil heats up quicker when I'm traveling at higher speeds despite my revs staying low (around 2000).

Anyone know why my oil heats up quicker at higher speeds?
I've got a 1.9 TDI PD130.

Cheers...
-Andy.

 

[Aky]

Yeah for some reason the engine warms up faster in higher gears. Its normal when I had my MK4 PD150

 

[AndyMac]

Everythings working harder at higher speeds, even though the revs are the same.

 

[Toxik-Signal]

Will running the car at higher speeds (but the same revs) cause more engine wear than at low speed with the same revs?