Quote:
Originally Posted by Flashmn
That engine those pistons are from has had some severe neglect. That brown shit is burnt oil.
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not as severe as you'd think. just takes a couple of delayed or missed oil changes. in the latter 1zzfe's they redesigned some things and changed the interval back to 5k max from 7500 miles. hell some people got into trouble following the 7500 mile schedule to the T. some configurations of the engine ran a little hotter and it was compounded by either stop and go driving on hot hot days, going a few thousand over on a change, or low quality oil being used. the 98-2000 engines suffered the worst. iirc the internal changes were either slightly different pistons which kept the oil control ring area cooler or it was just a different ring material.
