Quote:
Originally Posted by toyotaspeed90
ok.... being that overfull wont' cause a problem unless it's so full that you're getting excessive oil through the crankcase breather.... on these engines, that's a LOT of extra oil....
black smoke denotes that you're running rich, not burning oil. When oil burns, the smoke will have a blueish sometimes light greyish color.
someone would have had to make a HUGE mistake to have put in more than one extra quart.... as on average most cars take 4-5 quarts and trucks tend to take a bit more.... the 4age takes between 3.5 and 3.75 to "full"... but even I have had more than that and no problems. It's actually also somewhat common to use a little more oil to help when cornering (for those that don't have sump setups).
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Ok thats exactly what i wanted to know. As i mentioned i got the black smoke when it downshifted (auto) from 7000 rpm, so any chance it was just the efi system lagging or something like that?
I wasn't sure if burnt oil could cause black smoke, i've had an engine that burned lots of oil after going down hills, something to do with the vacuum line going to the tranny sucking oil... and even that never burned black. But i thought i'd ask anyways.
I'm still going to give that shop a call to ask wtf they were doing putting that much oil in it.