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Just bought a 1990 deville 4.5L and its about time for an oil change. How does the oil filter come off the adapter without getting oil everywhere, does not look like a very practical place to have it mounted?
 

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92 Fleetwood 2dr cpe - FWD, 96 Seville SLS, 02 Seville
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Rags, paper towels, corn based fermented beverage
 

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Not familiar with the 4.5 filter adapter and location. IF the base of the filter is higher than the gasket/tapping plate you could punch a hoole in the high point of the filter case and let it drain into the pan for a half hour .......

Old Ferrari V-12 trick ......... see the inverted oil filters - full flow and bypass - just behind the radiator?
 

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1991 Cadillac Brougham D'Elegance 5.7 Litre, 1994 DeVille
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It's one of the best locations for filter. It's easily accessible and there's no climbing under the car to get to it. Shove a couple rags under the area to catch any spills.
 

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2010 DTS
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How does the oil filter come off the adapter without getting oil everywhere,
It doesn't. Even with rags under it, it's still gonna make a mess, run down and drip off the pan. Rags will help, but won't alleviate the problem. It is easy access, but you still have to get under the car to drain the oil. I always thought it was a piss poor design.
 

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2001 eldorado,2008 DTS,2005 XLR, '96 eldo,'95 eldo,' 89 eldo,'78 eldo,'11CTS-V
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Wrap the filter in a plastic bag just after cracking it loose and spin it off by hand.
 

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1994 DeVille 4.9l
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Wrap the filter in a plastic bag just after cracking it loose and spin it off by hand.
I do this on my 4.9. I end up with none or minimal oil anywhere depending on how careful I am. It's a little cumbersome to keep the bag around the filter but well worth the effort to avoid the mess in my opinion.
 

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2010 DTS
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Now why didn't you tell me that when I had my '92 Deville Harry?

I'll have to give that a try on the Road Runner.
 

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1991 Cadillac Brougham D'Elegance 5.7 Litre, 1994 DeVille
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It doesn't. Even with rags under it, it's still gonna make a mess, run down and drip off the pan. Rags will help, but won't alleviate the problem. It is easy access, but you still have to get under the car to drain the oil. I always thought it was a piss poor design.
You can reach the drain plug from the side without crawling under. I figured that one out in frigid temperatures when I didn't want to do the extra work of jacking the car up.
 
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