I have an 03 2500 hd with a 6.0
seems like my oil press is a tad low, i drove my buddy 5.3 the other day, and his was up there, im just a tad under 40 at idle. i have 30k miles on it and have towed alot, it seems to run around 50-60 under accel, but not sure if the oil pumps are issues in this truck. she has piston slap to, i ran moble1 5 30, then i read with pistion slap to run 3 qt's 5-30 and 3 qt's 10-30, so moble 1 mix is what i run now.
what do you think? think its all good? the truck is pretty much stock, but will be getting sts soon

 

I have an SS (LQ9) 6.0, and mine runs a tad under 40 at idle too, always has. It has 5000 miles on it. It did it with 5w30, and same with 10w30 which is what is in it now. M accel psi's seem to be about the same i think, mabye a bit higher because i am using full 6 quarts of 10w30. I hit 80 psi at the shift points at wot.

Nate

 

i think you will be fine mine is alittle higher ,but i also run 10-30 oil

 

Mine's alway been at like, 35 at idle, and just over 45 when I'm driving. (40 is the middle marker, right??)

 

yes.
thats good to know. thanks

 

sounds like its ok...mine runs the same..

 

I thought mine was low, but it is the same as you guys around 38 at idle. I was thought about changing the pump when I swap the cam. I quess it is ok. I use Mobil 1 5w30.

 

thinking about a ported pump when i do my sts, but who knows, it makes me feel beter about the oil issue tho. thanks