New Boxster Owner / First Oil Change

[brjak]

So i am a newbie, and confused. Living in southern Ontario. I don't drive the car in the winter. It might be driven once or twice below 40F 5C.
It has 0/40 in it. Should i be using 5/40, or 10/40?

[Giller]

Originally Posted by brjak

So i am a newbie, and confused. Living in southern Ontario. I don't drive the car in the winter. It might be driven once or twice below 40F 5C.
It has 0/40 in it. Should i be using 5/40, or 10/40?

I'm not an oil expert, but if you aren't driving in the winter - I wouldn't use a 0. It gets pretty toasty in the summer around here....I would think you would be fine with a 5 or even a 10?

[JayG]

Originally Posted by brjak

So i am a newbie, and confused. Living in southern Ontario. I don't drive the car in the winter. It might be driven once or twice below 40F 5C.
It has 0/40 in it. Should i be using 5/40, or 10/40?

Factory recommendation is 0/40
That being said, one of the worlds most knowledgeable individuals on the M96 engine recommends Joe Gibbs DT40 which is 5/40

Thinner oils (0w) will flow easier when it is cold than a heavier oil (5w, 10w, etc), making it easier to lubricate the engine before the engine and oil is at operating temperature

This may be of interest
Oil Viscosity
or
Motor Oil Viscosity Grades Explained in Layman's Terms