The general concensus here is to use whatever your Owner's Manual
states, especially if it's still on warranty.

It's that simple.

No need to ponder the inscrutabilities of viscosity, etc. If it says
5w-30, then use that.

That's what my Nissan uses and I won't deviate from it...except that I
DID go to a synthetic: Mobil 1 5w-30.

John D.



Frank wilson <nospam@mailbox.com> wrote in message news:<3F0185ED.9FB226C3@mailbox.com>...
> Saw a post on this NG from the other day which address the subject
> of oil viscosity.From the responses,it appears that it's a serious no-no
>
> to use anything but 5W-30...at least on certain models.
>
> Apart from possibly lower gas mileage with heavier oil,is it
> *really* bad news to use 10W-30 in the summer rather than
> 5W-30? I certainly always use 5W-30 in the colder months.
>
> Thanks!