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Why would there barely be any oil in duke oil filter after sitting four years? by Patrick
Started on: 06-19-2009 04:33 PM
Replies: 7
Last post by: Patrick on 06-19-2009 09:33 PM
Patrick
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Report this Post06-19-2009 04:33 PM Click Here to See the Profile for PatrickSend a Private Message to PatrickDirect Link to This Post

I have an ‘84 Fiero with a duke here that I bought 4 ½ years ago. The engine ran when I bought it, but it had clutch problems, so I had it towed here and it’s sat ever since waiting for me to get at it.

Well, I finally have a chance now to deal with it. I thought I’d better “prep” it before trying to start the engine after not having run it at all during these last 4 ½ years. I drained the oil, which looked brand new, and I also wanted to change the oil filter.

I was rather shocked to find only about a tablespoon of oil in the old oil filter (which also looked brand new on the inside).

I’m kind of stumped as to how the filter could have so little oil in it. As you know, with the angle the oil filter sits at, the oil can’t drain out of the filter. Is there any chance the oil could of somehow siphoned out of the filter over the last four years?

Or is there a chance that when I heard the engine run (for a few minutes) at the previous owner's place, that oil wasn't actually making it to the oil filter? Is that even possible?

I’m rather reluctant now to try starting the engine until I get some feedback on this.

Anyone come across this before?
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hookdonspeed
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Report this Post06-19-2009 04:36 PM Click Here to See the Profile for hookdonspeedClick Here to visit hookdonspeed's HomePageSend a Private Message to hookdonspeedDirect Link to This Post
its probably all sludge at the bottom of the pan now....
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Patrick
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Report this Post06-19-2009 04:42 PM Click Here to See the Profile for PatrickSend a Private Message to PatrickDirect Link to This Post
 
quote
Originally posted by hookdonspeed:

its probably all sludge at the bottom of the pan now....



Ummm, I don't see the connection.
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Pyrthian
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Report this Post06-19-2009 04:46 PM Click Here to See the Profile for PyrthianSend a Private Message to PyrthianDirect Link to This Post
syphoned down
when you drained the oil, it creates a vacuum thru the oil pickup, sucking the oil down
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Indiana_resto_guy
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Report this Post06-19-2009 04:47 PM Click Here to See the Profile for Indiana_resto_guySend a Private Message to Indiana_resto_guyDirect Link to This Post
Think about the angle of which the filter is mounted on the block. Over four years of sitting the oil will drain back.
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Patrick
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Report this Post06-19-2009 04:52 PM Click Here to See the Profile for PatrickSend a Private Message to PatrickDirect Link to This Post
 
quote
Originally posted by Pyrthian:

syphoned down
when you drained the oil, it creates a vacuum thru the oil pickup, sucking the oil down



Now that you mention it, I had forgotten to remove the oil filler cap on the valve cover when I first started to drain the oil, so yes, there might've indeed been a vacuum created.

Hmmmm.... I'm feeling a little better now. Thanks for the response, Pyrthian.

Anyone else have some feedback on this issue?

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Patrick
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Report this Post06-19-2009 04:59 PM Click Here to See the Profile for PatrickSend a Private Message to PatrickDirect Link to This Post

Patrick

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quote
Originally posted by Indiana_resto_guy:

Think about the angle of which the filter is mounted on the block. Over four years of sitting the oil will drain back.



I don't have to think about it, I was just looking at it!

At least part of the enclosed end of the filter sits below the connected end of the filter. I honestly don't see how the oil could all drain out of the filter.

Usually when I pull the oil filter off a duke, the oil pours all over the place. But then, it hasn't had four years to drain/syphon back into the crankcase either.

Thanks Resto_guy. This is interesting...
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Patrick
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Report this Post06-19-2009 09:33 PM Click Here to See the Profile for PatrickSend a Private Message to PatrickDirect Link to This Post

Patrick

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Okay, curiosity got the best of me. I have another ‘84 Fiero here. This one has sat for 5 ½ years without being started. I don’t know if this is a good thing or a bad thing , but I figured I may as well take the oil filter off of it and see how much oil was still in the filter.

Drum roll please...
.
.
.
.
.
.
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.

About a tablespoon full.

So... whether the oil is being syphoned out or is simply draining out, it appears the oil filter on a duke will basically empty out while sitting for a long enough period of time. Always something to learn.

I guess I was worried for nothing, but how many of us ever remove an oil filter from an engine that hasn't been started for years and then take notice of how much oil is still in the filter?

Thanks for the feedback guys!
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