shaneo417

hey i have a 1991 Cherokee, and i do oil changes regularly, but the day after i do them the oil is black again, got any ideas, would a oil flush help, if so what could i do for it?

freegdr

whats happening is the new oil is cleaning out the dirty oil changing more often will help the process speed it self up, there a seafoam treatment every body talks about maybe search it and make you own decision on the use of it

shaneo417

should i be worried about it breaking up the carbon " to much" and wreaking my oil pump tho. oh yea i have around 275 000k on it

shaneo417

and it burns oil to lol

djb383

Hummmm, I thought black oil went the way of the carburetor.

freegdr

this is where the decision part comes in

shaneo417

yea i dont get it, never seen a engine burn up the oil like this before, except the Cummings or Detroits i work on haha

freegdr

have you had it since new,prob b4 u got it it was not change prop or cheap oil was used anr you seing the result

shaneo417

yea no i never had it from new, and judging by all the other things ive fixed on it its just another bad case of POS "previous owner stupidity" haha i would just like to get it running were its not smoking as much and not so many oil changes that's all

xebraj

have you checked the tranny fluid? sometimes the drag caused by the tranny will cause the oil to burn very quickly.

shaneo417

5 speed just changed it a month ago

mentalbreakdown00

Have you thought since it is burning excessive amounts of oil, that fuel and blowby gasses are getting into the oil, causing it to turn black quickly?

hercman

That's why. The rings are letting oil past and if oil can get passed the rings so can exhaust.

freegdr

a nother possibility does the oil smell like fuel?

shaneo417

i wouldn't say it smells like fuel, what would that mean, its not burning all the fuel? or could all of this be caused by dirty injectors and not enough fuel?