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Old 11-21-2005, 03:30 AM   #1
newyorker
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Black oil

I bought my car with 63k miles and no maintenance records. At 65k miles i decided to change the oil by myself for the first time. The oil in the engine that came out was PITCH BLACK. What does this mean? Could this be contributing to my cars bad gas milage. The car was a lease before it got to me maybe someone just didnt care about it.
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Old 11-21-2005, 03:34 AM   #2
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pitch black oil is very normal. if it came out milky, then you would have something to worry about. most people take halfway care of the leases cause they dont want to pay for the damages. if it was a rental...well...lets just say you would have reasons to be concerned. you should change the oil as soon as you get a used car.
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Old 11-21-2005, 03:37 AM   #3
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Quote:
Originally Posted by newyorker
I bought my car with 63k miles and no maintenance records. At 65k miles i decided to change the oil by myself for the first time. The oil in the engine that came out was PITCH BLACK. What does this mean? Could this be contributing to my cars bad gas milage. The car was a lease before it got to me maybe someone just didnt care about it.
You'll find that oil generally goes black very quickly, usually after a few miles. It doesn't mean anything is wrong. It's worth changing it though, as you haven't got any records
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Old 11-21-2005, 03:50 AM   #4
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Would you all recoment Synthetic or regular. I accidentally put in 10w-40 instead of 5w-30
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Old 11-21-2005, 03:54 AM   #5
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Quote:
Originally Posted by newyorker
Would you all recoment Synthetic or regular. I accidentally put in 10w-40 instead of 5w-30
Depends on the car as to what the manufacturer would recommend. With a low milegae like that Synthetic Oil would be okay, as it's not as loose as a higher milegae car would be, so the thinner the better (within reason lol)
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Old 11-21-2005, 04:03 AM   #6
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Originally Posted by Cliffy
Depends on the car as to what the manufacturer would recommend. With a low milegae like that Synthetic Oil would be okay, as it's not as loose as a higher milegae car would be, so the thinner the better (within reason lol)
Dodge Neon 65k miles. What kind of synthetic would you reccomend?
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Old 11-21-2005, 04:06 AM   #7
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Dodge Neon 65k miles. What kind of synthetic would you reccomend?
Any oil will do the job....but if you must have a brand then Castrol GTX Magnatec is what we used to use

Dont ask me too much about the viscosity (thickness if u like lol) as I'm not great with it
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Old 11-21-2005, 04:08 AM   #8
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Quote:
Originally Posted by Cliffy
Any oil will do the job....but if you must have a brand then Castrol GTX Magnatec is what we used to use

Dont ask me too much about the viscosity (thickness if u like lol) as I'm not great with it
I also used a bottle of that Pro-Line engine treatment. Is it any good?
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Old 11-21-2005, 04:10 AM   #9
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I also used a bottle of that Pro-Line engine treatment. Is it any good?
To be honest....In the UK we dont have it, by engine treatment do you mean an engine flush that you put in the oil?...or a fuel cleaner?
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Old 11-21-2005, 12:59 PM   #10
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Originally Posted by Cliffy
To be honest....In the UK we dont have it, by engine treatment do you mean an engine flush that you put in the oil?...or a fuel cleaner?
You put it in with new oil and its supposed to "polarize" the pistons and stuff to make them last longer and reduce friction.
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Old 11-21-2005, 10:38 PM   #11
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Originally Posted by newyorker
Would you all recoment Synthetic or regular. I accidentally put in 10w-40 instead of 5w-30
I take it from your name that you live in new york using a 10w-40 instead of a 5w-30 means that when your engines cold it runs at a 10 weight and when hot at a 40 weight(uses polymers that expand when hot increasing viscosity hence 10w-40)because of the colder weather you want to run that 5w-30 so that on start up it flows easier, but since you already put 10w-40 in it, don't worry about it just add the 5-30 next time
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Old 11-22-2005, 01:10 AM   #12
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Originally Posted by carlos
I take it from your name that you live in new york using a 10w-40 instead of a 5w-30 means that when your engines cold it runs at a 10 weight and when hot at a 40 weight(uses polymers that expand when hot increasing viscosity hence 10w-40)because of the colder weather you want to run that 5w-30 so that on start up it flows easier, but since you already put 10w-40 in it, don't worry about it just add the 5-30 next time
I live in philly, just like New York better lol
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Old 11-22-2005, 01:35 AM   #13
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I live in philly, just like New York better lol
still plenty cold right?
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Old 11-22-2005, 01:36 AM   #14
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Quote:
Originally Posted by Cliffy
You'll find that oil generally goes black very quickly, usually after a few miles. It doesn't mean anything is wrong. It's worth changing it though, as you haven't got any records

Not entirely true.

As for the oil being black, it's just... dirty oil.
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Old 11-22-2005, 09:55 PM   #15
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Originally Posted by 67Coronet383
Not entirely true.

As for the oil being black, it's just... dirty oil.
Um....no, I think you'll find that oil does go black quickly, ok, a few miles will be more like a couple of hundred miles....but in vehicle terms...that aint many. In my experience, anyway
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