Quote Originally Posted by jspringator
Will it hurt a high mileage motor (like mine) to run all day in 3rd at 2800 RPM? Mine does seem to pull best like this, but I have avoided it because of fear of blowing it up. BTW, I tow a little less than 9,000 lbs. I am not greatly concerned about gas mileage, but don't want to get stranded on vacation.
My experience has shown that egt's run high under those conditions. I prefer to run in OD at higher boost levels where things stay cooler.