6.0 engine questions...

hookem_9 · March 18, 2005

I'm shopping for a new truck and considering the 6.0. I currently have a 02 6.0, which knocks of course, but has caused me no troubles. Is the NEW 6.0 "04-05" improved over the earlier 99--02 design? no knock? smoother? fuel economy any better? any other benefits???

Thanks,

jeb · March 18, 2005

My 04 6.0 has no knocks at 9k miles. It's a very smooth motor but it is thirsty. This is in a Yukon XL 2500 so it's the 335hp HO 4.10 version.

taco · March 18, 2005

My 6.0 is quite (no knocks) - MPG is 13 overall --- Thinking about getting a tune for milage.l

Frank S · March 18, 2005

My '04 does not have any knock at 11months of use and just under 11k miles. I do have a little valve train noise but it's quiet other than that.

tomm · March 18, 2005

My 2004 2500hd 6.0 auto with 9k has no knock and gets 11.5 to 13.5 mpg in the winter with very little highway driving .

BADGERMAN · March 19, 2005

I have a 2003 6.0L (no knocks) Great motor, runs smooth, does get a little thirsty,

But I think it is because I have a 50lb foot.

I have never had any problems with the motor.

Since I have bought the truck, I have averaged about 11.8 mpg.

MrQuadrasteer · March 19, 2005

Mine's always been a little cantankerous is the morning, but never too loud or bad. More valvetrain than CSK. I have heard csk a couple times, never really knew why sometimes and not others, but really rare. I ain't complainin' !!!

It really quieted down a lot when I changed to Mobil1. I highly recommend it

Forgot to mention, y'all getting these low number mpgs, get a Wester tune. I got a 3mpg bump. I'm up to mid-14's mixed driving. And I have a pretty heavy foot myself, can't drive below 70mph....

vhato · March 22, 2005

'04 Vortec 6000,

Sounds like a newer Diesel if the engine temp is below 150 degrees....and I use Mobil 1 Synthetic.

Average Weekend mileage is 13.3 MPG in a VERY busy city. Work commute is 15.1 MPG if I don't break 65 MPH for the tank and 14.5 MPG if I do nail 70 MPH.