Engine oil turning black...
06-24-2008 | 12:45 AM
#1
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From: Raleigh
Engine oil turning black...
Is it normal for the engines oil to turn black? I am guessing its carbon deposit. Is it time to change oil? I check engine oil regularly, in the past 1 year that I owned the car, this is the first time I am noticing that the engine oil is darker?
06-24-2008 | 01:09 AM
#2
Rotary Powered Countryboy
Joined: Feb 2007
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From: Pittsburgh
uh as the oil gets used it gets black in any car engine no matter what that is the dirt and from getting hot etc inside an engine change at 3000 miles like usual and keep adding when u need it
06-24-2008 | 07:40 AM
#5
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From: Fayetteville, PA
Depending on how you drain the oil, you will only be replacing about half the oil in the system. The oil coolers and oil lines hold a lot of oil, so as soon as you run the engine after an oil change, the old oil mixes with the new and it turns dark. Change your oil frequently and the color won't matter.
06-24-2008 | 01:15 PM
#7
New Oil is like Lemon-Tea kind of golden-ish color. (Except for Royal Purple, they Purposely add some dye to it to make it look like Purple, but will fade out in maybe 10 miles of use)
Old oil is always dark/black, consider the heat, pressure, and dirt that its *absorbing* ...
Old oil is always dark/black, consider the heat, pressure, and dirt that its *absorbing* ...
06-24-2008 | 03:04 PM
#11
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oil q
Don't pick on this guy people.
To answer your question;
It is prefectly fine for the oil do get very dark.
like the guy said, it will change color because of
the temp, carbon, etc.
Just be sure to change it reguarly.
I usually pour 0.50 quart of oil just to drain excess carbon.
what kind of oil are you using?
leemoshuffle
To answer your question;
It is prefectly fine for the oil do get very dark.
like the guy said, it will change color because of
the temp, carbon, etc.
Just be sure to change it reguarly.
I usually pour 0.50 quart of oil just to drain excess carbon.
what kind of oil are you using?
leemoshuffle
06-24-2008 | 06:13 PM
#18
Purveyor of fine bass
Joined: Aug 2003
Posts: 1,618
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From: Worcester, MA
Yup, it's normal, and here's something many probably don't know. Engine oil loses its color really quickly (within like 1000 miles), so color alone is not at all a good indicator of the wear.
http://www.motor-oil-engineers.com/oilcolor.htm: "In general, the color of an oil does not have any bearing on its lubrication ability or whether or not the oil is suitable for continued use."
http://www.carbibles.com/engineoil_bible.html: "And don't worry about the engine oil turning black. It will lose it's golden-brown colour within a few hundred miles of being put in to the engine. That doesn't mean it's not working. Quite the contrary - it means it is working well. It changes colour as it traps oxidised oil, clots and the flakes of metal that pop off heavily loaded engine parts. Just don't leave it too long between oil changes."
http://www.washingtonpost.com/wp-dyn...801210_pf.html: "Do not be alarmed when motor oil turns black, which can happen long before the oil's protection value is used up. Engine combustion produces soot, and other byproducts disperse throughout the oil, turning it dark."
http://www.usasyntheticoil.com/oil-c...ubrication.htm: "The color the AMSOIL on your dipstick (or any oil for that matter) has absolutely no bearing on whether or not the oil is suitable for continued use or if it should be drained and replaced."
From my experience, synthetic oils stay "golden" for a longer period of time, but I don't think I've ever drained golden-colored fluid from my last car when using synthetics. Haven't used synthetics on the RX-8 and I don't do the oil changes myself anymore, so can't relate any experiences there.
http://www.motor-oil-engineers.com/oilcolor.htm: "In general, the color of an oil does not have any bearing on its lubrication ability or whether or not the oil is suitable for continued use."
http://www.carbibles.com/engineoil_bible.html: "And don't worry about the engine oil turning black. It will lose it's golden-brown colour within a few hundred miles of being put in to the engine. That doesn't mean it's not working. Quite the contrary - it means it is working well. It changes colour as it traps oxidised oil, clots and the flakes of metal that pop off heavily loaded engine parts. Just don't leave it too long between oil changes."
http://www.washingtonpost.com/wp-dyn...801210_pf.html: "Do not be alarmed when motor oil turns black, which can happen long before the oil's protection value is used up. Engine combustion produces soot, and other byproducts disperse throughout the oil, turning it dark."
http://www.usasyntheticoil.com/oil-c...ubrication.htm: "The color the AMSOIL on your dipstick (or any oil for that matter) has absolutely no bearing on whether or not the oil is suitable for continued use or if it should be drained and replaced."
From my experience, synthetic oils stay "golden" for a longer period of time, but I don't think I've ever drained golden-colored fluid from my last car when using synthetics. Haven't used synthetics on the RX-8 and I don't do the oil changes myself anymore, so can't relate any experiences there.
06-25-2008 | 09:24 PM
#22
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From: California, Chula Vista, Otay Ranch
Serious, who likes to come home after a hard day's work, only to find a bunch of nonsense going on at rx8clubz that needs to be put under control?
Last edited by User24; 06-25-2008 at 09:29 PM.
06-25-2008 | 09:44 PM
#23
Serious, who likes to come home after a hard day's work, only to find a bunch of nonsense going on at rx8clubz that needs to be put under control?
I look forward to it.........
S
I look forward to it.........
S
)