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 | bmeyer
Join Date: Jul 2004 Posts: 175 Central Wisconsin 
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2005-12-11 120864
I've owned my 2210 for a bit over a year. During that time I've changed oil three times which is more frequently than called for (I have 75 hours on my unit). But even though I changed oil and filter just a month ago, I notice the current oil is already black. Is this just normal for diesel engine?
Everything seems to be running fine so there is no specific problem causing me to ask this question. I'm just trying to learn more about the characteristics of my machine.
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 | Chief
Join Date: Jul 2003 Posts: 4297 Southwest MiddleTennessee 
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2005-12-11 120866
The black oil is normal. The blackening comes from soot generated during the combustion process. Just use a good quality oil filter and oil at each specified oil change you will be fine. ....
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 | Peters
Join Date: Feb 2002 Posts: 3034 Northern AL
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2005-12-11 120872
At 75 hours the engine is not broken in yet and the rings are not necessary set in. Blow by will darken the oil quicker than it should. Have you applied any heavy work to the machine? Like Randy said a little color is natural, but mine is normally are just brown at 25 hours. ....
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 | Dave CC
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2005-12-11 120876
Not speaking from Deere experience, but I was a marine engineer for 14 years.
The “was” part of that story can be simplified by noting that my wife wanted children…so bye-bye ocean. But seriously, black oil in a diesel is normal. I’m new to tractors (and loving my 4210 but wife is getting nervous about that…).
As stated, unlike gasoline engines, diesels are prone to carbon build up, soot, blow by, ect, but that is typical and does not pose a problem on its own. However, a better measure of when oil needs to be changes is viscosity change and oil analysis. Not sure if either is really practical on small engines. On larger HP engines 2500HP and up, we would only change the oil as per the hours, viscosity, analysis or an obvious fuel dilution. These engines took upwards of 250 gallons per engine so you had to be a bit surer the oil was compromised. On a 5 or 6 qt engine, when in doubt-drain it out. But don’t be nervous about a dark color.
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| bmeyer
Join Date: Jul 2004 Posts: 175 Central Wisconsin
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2005-12-12 120887
Thanks for the notes. The "toughest" workout my 2210 has had so far was in moving 75 yds of topsoil around the yard this summer. Other than that just snowblowing, tiller work, and dragging a trail with the BB.
I've been changing oil every 25 hours. That has been a summer - winter schedule for me. I know I can go longer but it just seemed like a good maintanence schedule for my use.
I guess I need to get comfortable with the dark oil. Glad to hear it's normal. Thanks!
B. Meyer ....
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