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How to get clean engine oil?

 
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Old 08-05-2011, 11:28 AM
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How to get clean engine oil?

Hey guys, I'd like to know how the hell you get your oil clean in your engine. Even when I do my oil changes the new oil gets dark. I tought seafoam would help to clean it, but it didn't so now I'm confused...
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Old 08-05-2011, 11:38 AM
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Re: How to get clean engine oil?

It will always come out dark after running the car. There's nothing wrong with it being dark after putting it in your car. You can take your motor out and completely shine it up and put some new oil in it but after running it you'll see the oil will be dark again.

You can get clean oil in your engine by giving it an oil change and not ever running it again. Lol
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Old 08-05-2011, 11:41 AM
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Re: How to get clean engine oil?

Nice to know xD I thought that my engine was really dirty and that it needed a good clean, but now I think that I have nothing to worry about :)
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Old 08-05-2011, 12:15 PM
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Re: How to get clean engine oil?

the more often you do oil changes the cleaner it will get. it gets dark because thats all the gunk in your engine getting cleaned out.

my friend changes his wrx's oil every 3k miles and has been since the car was bought. its still gold everytime he changes it, like as gold as it comes out of the bottle.

so i would say do oil changes more often if you wanna try to clean it up.

although you could also have the problem my old lude had, which the piston rings were going and i had blow by so i was actually getting gasoline mixed into my oil which was darkening it.
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Old 08-05-2011, 01:04 PM
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Re: How to get clean engine oil?

hope you weren't doing seafoam with new oil... that's a no no
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Old 08-05-2011, 02:27 PM
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Re: How to get clean engine oil?

Your engine has a positive crankcase ventilation system that works to keep combustion byproducts that leak around your piston rings from mixing with your oil and mucking it up as shown below.



I would remove each of the pcv hoses and check to make sure they are not plugged. I would then remove the pcv valve which is simply done by just pulling it out of its hole and make sure it is good. If you shake it and it rattles ,thats an indication that its good. Of coarse if the pcv system has been modified or removed, be sure to return it to a stock configuration. This is because the older your car gets, the more the engine depends on this pcv system to keep your oil clean.
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Old 08-05-2011, 05:11 PM
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Re: How to get clean engine oil?

I thought of flushing my engine with oil kinda like a trans flushing.

Fill, drive for 100, drain and repeat until clear. Probably would take a lot of oil changes and waste a waste of money.
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Old 08-05-2011, 05:31 PM
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Re: How to get clean engine oil?

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Originally Posted by SHDRIVER View Post
Your engine has a positive crankcase ventilation system...the older your car gets, the more the engine depends on this pcv system to keep your oil clean.
What? I agree that blow-by gasses pollutes the oil in the pan, but the PCV system isn't there to clean it. All cars have some sort of crankcase ventilation -- if they didn't, blow-by gasses would eventually pressurize the crankcase and overstress something -- most likely the pan itself, but in the meantime, it wouldn't do much for the bottom end. That used to mean a vent tube (aka breather) sticking out of the engine to route blow-by gasses to atmosphere. Positive crankcase ventilation is a '70s pollution control development, to take those gasses, and rather than venting them to open air, recycle them back into the intake air for further combustion. Effects on the crankcase oil are strictly collateral.
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Old 08-05-2011, 06:10 PM
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Re: How to get clean engine oil?

I'd rather my oil be dirty than my oil passages be dirty.
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Old 08-05-2011, 08:08 PM
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Re: How to get clean engine oil?

Oil is supposed to be dirty. Dirty shows that oil is doing it's job. After driving 100 miles on the new oil change, pull the dipstick. If it's dirty again then you need to flush the motor. Or start using a premium filter and within 3 changes, the sludge will break up.

The main reason I hate "used cars." of all the crap you can skimp on when maintaining your car, OIL is what people choose. " I can go another 500 miles," then they miss the oil change.

Don't worry about the oil color, just change it RELIGIOUSLY
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Old 08-05-2011, 11:45 PM
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Re: How to get clean engine oil?

EGR sucks!!! Got an 07 Dodge with the 6.7 Cummins. Dirty oil even right after I would change it. Then an H&S Mini Maxx tuner, DPF delete kit, EGR cooler delete, and 5 inch straight from the turbo back. And it stays clean even after about 1500 to 2000 miles before it starts to even get a little dirty. And that's diesel. Emissions kill engine efficiency. Just sayin
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Old 08-05-2011, 11:56 PM
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Re: How to get clean engine oil?

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Originally Posted by Lude775 View Post
EGR sucks!!! Got an 07 Dodge with the 6.7 Cummins. Dirty oil even right after I would change it. Then an H&S Mini Maxx tuner, DPF delete kit, EGR cooler delete, and 5 inch straight from the turbo back. And it stays clean even after about 1500 to 2000 miles before it starts to even get a little dirty. And that's diesel. Emissions kill engine efficiency. Just sayin
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Old 08-06-2011, 12:25 AM
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Re: How to get clean engine oil?

mine is dirty about every 1k miles and i use castrol syntec with lucas oil treatment every oil change. and correct me if i am wrong but it has alot to do with the way u drive too right? i hit vtec in first and second almost everytime i take off. and sometimes i even go into 3rd. tisk tisk i know
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Old 08-06-2011, 04:03 AM
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Re: How to get clean engine oil?

seafoam is awesome!
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Old 08-06-2011, 04:13 AM
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Re: How to get clean engine oil?

If the oil turns dark right after you change it, either your sludged up or you might have some blow by from the rings.
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