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Stupid oil change question?

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99ls1tj

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I got my truck home today from having my first oil change done. My dealer WAY overfilled the oil. I've never changed the oil on a Cummins before. Do you think I'll have any luck draining a quart or so from loosening the drain plug, or should I just prepare for a flood of oil? Thanks
 
Did you check the dipstick after letting the engine sit for a loooong time?


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You could just half way loosen the plug to where it is draining out but not gushing. Tightened and recheck level. You could also get one of those 12v pumps on Amazon and vacuum oil out of the dipstick.


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Pretty much impossible to drain a little out with the stock drain plug, it doesn't have slots or any other provisions to start with a restricted flow, usually get nothing and the a huge gusher.
Definitely let the truck sit overnight and check levels before starting engine before you attempt to drain any oil. That dipstick can give way false readings if the engine has been run anytime recently.
 
Mikes145 said:
Go back to the dealer.

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They're about 20 miles away and it's a holiday. They were closed today by the time I thought to check it. I may just not drive it this weekend and take it Monday. If I decide to try to do it myself, I may just try holding the plug over the hole and tilting it slightly. I can see myself making a huge mess. :( I wish I did have one of those top side oil changers.
 
Hawk375 said:
Did you check the dipstick after letting the engine sit for a loooong time?


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It sat for about an hour. Chances are if it didn't sit long enough, it would just get worse (higher on the dipstick, right?).
 
look dirty. like they might not have drained it all out. My oil is always so clean after a change you can barely see it on the dip stick.
 
jadmt said:
look dirty. like they might not have drained it all out. My oil is always so clean after a change you can barely see it on the dip stick.
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It does look fairly dirty but I did drive it home from the dealership (about 20 miles). I was thinking the diesel oil gets dark fairly quick, but maybe not that dark that quick? It was my first oil change and it was free. I may start doing it myself.
 
Use a vacuum extractor from the dipstick. I use them to change oil on my boats outboard from the dock.
 
99ls1tj said:
It does look fairly dirty but I did drive it home from the dealership (about 20 miles). I was thinking the diesel oil gets dark fairly quick, but maybe not that dark that quick? It was my first oil change and it was free. I may start doing it myself.
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I don't have a diesel but I have been changing my own oil for going on 50 years and seems pretty dark for having 20 miles on it. I would defer it for other diesel owners tho to tell you if that is normal after only 20 miles.
 
Pretty typical for a diesel. If was “dirty” the dots wouldn’t be visible. It is over filled , though. Pan retains some oil on every change.
 
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