Here's my question. Just get an oil change. I double checked and no oil leaks noticed But also noticed the color of the oil! Why - I ask myself would it be dark (not black) already; i.e. only several hours after it was drained and replaced?? Is it me - or shouldn't be still clear? Before I forget - mine is a 2005 Dodge Diesel 5.9l - Laramie. Could it be the filter was not changed? Or, another reason? Thanks in advance - for your interest and reply.

Diesels will always discolor the oil in only a few miles. Totally normal!

I'm assuming this is not your first oil change? If not, does the oil look darker than the previous oil changes? If you suspect the oil filter wasn't changed I would take a close look at it to see if it's a new one or not.Like reported the oil will turn darker pretty quick after a oil change.

The oil drain plug on these engines are indented so not all of the oil will drain out of the pan and this is what is discoloring the new oil. With 13 quarts is will not affect the new oil. Don

All Diesels as part of the emissions process put soot into the oil. This is normal and should not alarm you.This will make your oil look darker after a few miles, depending on how much soot your engine produces.The oil is fine.

The oil turns black from all the soot introduced into the oil from the 3rd injection event which is a in cylinder egr. Happens to all CTD with the 3 injection events. I don't recall offhand which years all had this but I know for a fact 2005 is one because that's what I have. Oil turns black immediately.

Dodge Diesel oil changed - color of new oil | Good Sam Community

27 Replies

boston_blacky
Explorer
Apr 20, 2016
Thanks guys - it's all good. BB
fj12ryder
Explorer III
Apr 20, 2016
My 2001 Cummins turns the oil dark very quickly after an oil change. Just seems to be the nature of the beast.
srt20
Explorer
Apr 20, 2016
The oil turns black from all the soot introduced into the oil from the 3rd injection event which is a in cylinder egr. Happens to all CTD with the 3 injection events. I don't recall offhand which years all had this but I know for a fact 2005 is one because that's what I have. Oil turns black immediately.
4X4Dodger
Explorer II
Apr 20, 2016
All Diesels as part of the emissions process put soot into the oil. This is normal and should not alarm you.

This will make your oil look darker after a few miles, depending on how much soot your engine produces.

The oil is fine.
Perrysburg_Dodg
Explorer
Apr 20, 2016
The oil drain plug on these engines are indented so not all of the oil will drain out of the pan and this is what is discoloring the new oil. With 13 quarts is will not affect the new oil.

Don
FishOnOne
Nomad
Apr 20, 2016
I'm assuming this is not your first oil change? If not, does the oil look darker than the previous oil changes? If you suspect the oil filter wasn't changed I would take a close look at it to see if it's a new one or not.

Like reported the oil will turn darker pretty quick after a oil change.
donn0128
Explorer II
Apr 20, 2016
Diesels will always discolor the oil in only a few miles. Totally normal!

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Dodge Diesel oil changed - color of new oil

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