Got a question.
 

I know this is kind of a dumb question but I don't think my truck has ever seen 2500 RPMs. Is keeping the RPMs down harder on it than gettin on it once in a while? Again, know this is a dumb question but a friend told me that getting on it once in a while was good for it.
Thanks.

About a year ago I read an article about this very thing. It said that alot of people still think that you have to "blow out the carbon build up" with high rpm run's. It went on to say that the older vehicles with carbs needed this, but todays cars with fuel injection don't need it. But I did read this and haven't followed up on it so take it for what it is ;).

Which engine?

A 4.9 with an automatic never revs over about 3700 and usually shifts before or at 2500 unless you're at WOT. So if you have a 4.9 you're simply mimicking what the PCM does on the auto-trannied versions.

If you have a 5.0 you're lugging the engine by keeping the revs that low. You're nowhere near the powerband and you're just barely into the range where the engine has its best efficiency. Raising your shift points by 500 wouldn't hurt a thing.

It's a 5.8 and most of the time I'm on the highway and doing 65 and the RPMs are around 1700.

I thought you were talking about a manual tranny and your shift points. Since you have a 5.8 you have an E4OD tranny. It's doing exactly what it needs to do. If you want to use a few more RPM getting up to speed it won't hurt anything but fuel economy, nor will it help anything.

Alright, thanks!