Re: O/T: 1998 GMC K2500 w 7.4 liter

Posted by Jon H on December 22, 2004 at 19:23:40 from (69.26.18.79):

In Reply to: O/T: 1998 GMC K2500 w 7.4 liter posted by MichaelNEIowa on December 22, 2004 at 16:24:00:

A fellow I work with has a 98 2500 Chevy with the 7.4 motor. It is a little over 390,000 miles. Most of them highway miles,but atleast 50% of that pulling a tandem trailer. Never did anything to the 7.4 or the 4L80E transmission except oil and filter changes. The first 150,000 on mineral oil,and the rest on Mobil 1 synthetic.The engine still runs like new and uses no oil. It is starting to cold start a bit slower,might be time for some injector work.
I have a 92 3500 with the 7.4 and 4L80E. bought it at 142,000 and now have 160 on it,engine runs great,another one on Mobil 1 synthetic oil. mine is a short trip farm pickup. Both are 4X4 and make a best of 13 mpg with 4.10 tow package axles.

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