On 7/28/05, Bill Pitz <dakota@billpitz.com> wrote:
>
> Don wrote:
> >
> > Yes Andy you got the right idea. Why use the 5w30, over the 10w30 in the
> > 4.7? The 4.7 has a few small oil passages in it and the 5w30 flows
> > better though them at colder (cooler) temps when the block is
> > cold(cooler). I think the the reason at least.
>
> In my 2000 4.7, I believe the manual only says to use 5w30 in climates
> where the temperature is sometimes below freezing. Since there are only
> one or two days a year here where the temperature is that cold, I've
> stuck to the standard 10w30 as recommended by the owners manual and the
> dealership's service department..
Interesting. I'm pretty sure my '03 4.7L recommends 5w30 unless I'm
going to regularly see sub-freezing temperatures.
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