oil life index

1993 CADILLAC ELDORADO
130,000 MILES • V8 • FWD • AUTOMATIC
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ERIC1234
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what is the oil life index? and why is the number going down each time i start the car? for instance it was 78 yesterday and is now 75 today?
Feb 3, 2011 at 7:06 PM
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DOCFIXIT
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That is oil life as to % left. starts at 100% to 0%
Feb 3, 2011 at 7:16 PM
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ERIC1234
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so then if i am correct it has nothing to do with the oil pressure? i was told that it did. but from what you are saying it sounds like the number is dropping because i am leaking oil or just burning it right.
Feb 3, 2011 at 7:59 PM
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DOCFIXIT
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No means how much life is left in % till next oil change
Feb 3, 2011 at 8:14 PM
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ERIC1234
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wow, i really don't know anything so please forgive my ignorance on this topic. so oil has life? meaning? and i changed the oil pressure switch could it have anything to do with that?
Feb 3, 2011 at 8:25 PM
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DOCFIXIT
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No oil pressure switch has nothing to do with oil life it is an electronic counter to say when time for next oil change
Feb 3, 2011 at 8:39 PM
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ERIC1234
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one more if you do not mind sir, if i lower the idle will it save me gas without doing any damage? the car seems to idle at 1000 rpm's is that good or bad.
Feb 3, 2011 at 9:01 PM