| Engine break in question for Matt Colie [message #143432] |
Wed, 14 September 2011 21:42  |
idrob
Messages: 645
Registered: January 2005
Location: Central Idaho
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Senior Member |
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This is a question for Matt Colie and anyone else who wishes to comment.
My new Jeep Grand Cherokee 5.7 L Hemi V8 will be here next week. I know there are three schools of thought on break in of brand new engines, the old "slow and careful, treat it gentle for a long time", the "run it hard and like you stole it after a first few miles and show it no mercy", and the general owners manual statements that say "drive it with some moderation for a couple of hundred miles and then just drive it like you would normally". BTW, the primary use of the rig will be as a tow vehicle, for relatively small trailers, around 4000# max.
Matt, I know in one of your former lives you did lots of engine testing, some to failure. What would you personally do in the first 1 to 2 thousand miles on this engine?
Second, most cars now just have the first engine oil change at the normal 5000 to 7000 mile point, no early changes required or recommended. What is your opinion on that as general policy?
I appreciate your answers, and anyone else who cares to chime in, just fine, do it.
Rob Allen
former owner of '76 x-PB
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