Black oil I just got an oil change and two days later the oil was pretty black? Any idea what would cause this? thanks [email protected]

hot /cold makes no difference to the quantity drained out
check the proper fill level as you may have overfilled the sump

Here is what you must do, pressure wash the engine and the transmission top and especially bottom of all grease and oil residue then install a bottle of special die that glows under a black light, drive the truck for a 10 or so miles and then put it on a car lift and check for the source of the leak with a black light. On this old of an engine the leak are likely all over the place.

Here is an article explaining a common engine failure with this particular engine: http://apa.ca/readarticle.asp?id=547

Logic would tell you that even though a leak down test was performed, that if you do not have oil in the coolant, or any kind of oil leak, that the oil is going out the tailpipe.....

Are you absolutely certain the noise is lifter tap and not an exhaust leak? These are pretty well known for breaking exhaust manifold studs, or even cracking exhaust manifolds. The noise will be present on a cold engine but might go away as the engine heats up and the manifold expands. Maybe that's why it seems to go away after adding additives or changing the oil. It gets just enough heat in the engine to fool you in to thinking the issue was resolved by adding the oil/additive. Are you always adding to a cold engine?

-Rod

test fuel pump pressure seems like its faulty i think your right

You need to have the system scanned for fault codes.

It sounds like the valve seals?

you might need new valve guide seals. only a trained professional show attempt.


hope this helps.
please rate good.

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Unhook the battery for about ten minutes... that should take care of it..


Robert

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havent seen this problem on any yet. make sure who ever changed the oil used 5W20 the hemis are very picky