Cetris paribus, does lowering oil viscosity raise or lower oil temp?

[williar]

If I run a 10w40 weight oil rather than a 10w30 weight oil, of the same brand/type, will my oil temperature be higher, lower, or not change at all?

 

[Geoff]

Thinner flows faster, carries heat away quicker, and has less friction than thicker. The 2 oil grades you mentioned are pretty close though.

 

[YZF150]

Ubi dubium ibi libertas.

 

[427Z06]

De gustibus non est disputandum.

 

[moribundman]

Ubi oleum est?

 

[pscholte]

quote:

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Originally posted by YZF150: Ubi dubium ibi libertas.

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Ubi dubium? The title of a Roy Orbison song...you got to get up p-r-e-tty early in the morning to get one past me. Veni Vidi Virtuoso Paolo