I believe 5w30 comes from the factory for the 4.7 but upon 1st oil change
(in the summer) my dealer put in 10w30.
Upon 2nd oil change ( a free one from the dealer) I brought in 5w30 Royal
Purple Synthetic oil and they all said: 'cool, great oil, 5w30 is the way
to go', so go figure.
On Tue, 20 Nov 2001, kwreimer wrote:
> THE DEALER USE 10-30 IN THE 4.7. AT LEAST MINE DOES, AND I USE IT ALSO..
> ----- Original Message -----
> From: "Mark MacHale" <mmachale@garfieldre2.k12.co.us>
> To: <dakota-truck@buffnet.net>
> Sent: Tuesday, November 20, 2001 10:19 AM
> Subject: DML: oil question
>
>
> > I want to try a synthetic oil in my 4.7, but I can only find 10w30. Book
> > calls for 5w30. The last thing I want is to get worse gas mileage. What do
> > you think?
> >
> > Mark
> >
> >
>
>
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