So today I changed the oil on my 6.7 and didn't consult the diesel supplement until after the job. The manual says the engine takes 12.4 litres but I put in 13.2 so I'm overfilled by almost a litre. Now I'm wondering if I should try and remove a liter or if the truck can tolerate it.

 

I would remove it. Pretty easy, just loosen the drain plug without removing it and let the oil drip out till your at the right level.

 

remove, loosen but do not remove drain plug.

then mark on the radiator cover.. the amount needed for an oil change.
then the size of wrench needed for the job.

HOW will common knowledge ever be passed down to the younger generation.

and they say :"WE" are in the communication AGE. NOT>>>>

 

I wouldn't bother. In sportbikes and Jeeps it is routine practice to overfill by a quart. I have never heard of them having a problem.

 

Years ago a Ford Tech told me the low oil pressure pump went out due to having to much oil in truck. Now that I know much more about these trucks, most of what he did to my truck was a waste of good $$$$$.

Like the others.... let it drip out... is what I'd do on a newer truck.

 

I don't like to see too much oil in any thing...especially when oil pressure is important (like in trannies and engines). Too much oil is a good way to have foamy oil.

 

If it were me I would loosen the oil plug and drain what you don't need. It's very easy to do.

 

AIRATION. look it up.. bad for bearings.

and has been known for EVER....

racing is not driving down a highway. plus they rebuild them every year. or sooner.

 

The air bubbles in the oil will interfere with the oil's shear strength, which is what keeps metal parts from rubbing directly together. Not good.

 

Chuck's giving sound advice here. There is a good reason the engineers recommend a specific number of liters ... why wouldn't you follow what they say?

 

We're talking basically a quart, 58 cubic inches of oil. If the oil pan is roughly 12x12 inches, we're talking 1/3 an inch of extra oil in the pan..... your oil level is going to increase more than that in half the pan if you pull into a mildly inclined driveway. Unless you're aerating the oil every morning backing out of the driveway, this can't be a real problem.

I mean don't get me wrong, drain the extra liter, it's not exactly hard to do. And if you overfill a crankcase by double yes you can trash the bearings or even get a runaway diesel. But one extra liter in 13...... come on, this doesn't matter at all.

 

And don't do it again, it just gives us gasser guys more ammunition in the never ending 'cost of maintenance' debate.

 

can it do damage,, most likely not..

but not knowing how low the connecting rods are in relationship of the top of the pool of motor oil...
as long as there is space.. no harm..

but aeration in oil .. your oil gauge or light will NOT report loss of pressure..

and WHO can/will guarantee NO damage will happen.
.
.

 

A gallon over is a problem. A quart is not...that is in a larger displacement engine. Its relative... a quart over in a push mower is a huge problem. In your 6.7 its hardly noticeable. Stop worrying and drive it. A transmission is more sensitive to over fills with the same relativity. A quart wont hurt it a gallon will.