Sounds like he's been doing some hot-rodding from the sounds of his MPG's!
:) I think the average on the 5.9's lie somewhere between 14-15 MPG's
As far as the octane goes, 87 won't kill the engine, but if hes getting some
pinging, 89 is the way to go. I doubt a stock 5.9 has an high enough
compression ratio to take advantage of the higher octane gas.
Gary Hedlin
""William H. Hiatt III"" <william@hiatt.net> wrote in message
news:002a01c2e2bd$166e2a10$c700a8c0@wasfd...
>
> My brother just got a 2003 R/T, and he's loving it! Hell, I even like it
> too, although not as fast as my truck (no flames please, I know, he's
> stock, I'm a modded 4.7 yadi-yadi-yah) I do like the new interior and
> rear disc brakes.
>
> The dealer told him to run 91 in the R/T, and I balked at this, and got
> him to run 89. I told him he'd be fine running 87 in it, especially
> since it's in stock form. What do you guys run in your R/T's? Am I
> correct in assuming that 87 should be perfectly fine in his truck?
>
> He's also getting 10.5MPG. I know he only has 1,500 on the truck, and I
> don't know his driving habits (My guess is it's either on or off!). What
> are you all getting in your trucks? His main driving is about 10 miles
> to school each morning and back home in the afternoon, and then around
> town driving.
>
> Thanks for you're help!
>
> william
>
This archive was generated by hypermail 2b29 : Fri Feb 06 2004 - 11:45:58 EST