A filter even when dirty will pass oil because they have a bypass valve built in. The idea is that it is certainly better for your car to have dirty oil circulating than a lack of oil. Either will damage your engine but the dirty oil will just take longer. I use the best oil filter I can get my hands on because it is a critical component for engine longevity. It very well should be changed at each oil change.
2007-07-17 18:20:12
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answer #1
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answered by mr.answerman 6
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There are some extended (10,000 - 20,000 mile) oil drain synthetic oils that suggest changing the filter between oil changes but not the oil. Never the other way around. A quality oil filter (Wix, AC-Delco) costs less than a quart of synthetic oil. It's not reasonable to crap up a fresh oil change while risking a used filter with the media partially or fully plugged causing the by - pass valve to open. When that happens you get no filtration whatsoever.
Extended drain interval oil filters Mobil 1, K&N, Amzoil have filtration material that purposly does not filter the "fines"- particle sizes under 25 microns. Sure they will not go into a bypass mode as quickly but if you change your oil every 5,000 or less you'd be better off with a filter that traps particle sizes 25 microns or smaller.
2007-07-18 07:54:28
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answer #2
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answered by Country Boy 7
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No, the filter is not good, it is only good as long as the oil is. Why wouldn't you buy a new filter anyways, you can get them for three bucks...
2007-07-17 22:23:27
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answer #3
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answered by Jr. Mechanic 4
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you need to change the oil filter also. when the oil is not thik enough neither is the filter good enough to do anything good for new oil
2007-07-17 22:30:55
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answer #4
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answered by Ty G 2
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How do you know the filter is still good?
2007-07-17 23:01:50
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answer #5
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answered by Stop Sine 3
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Hi,
It is a mechanics rule that WHEN YOU CHANGE OIL YOU SHOULD CHANGE THE FILTER.There is no doubt in it.the filter will be damaged inside but you cannot feel from outside.
change it .....
regards,
Nataraj
Bahrain
2007-07-18 00:27:40
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answer #6
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answered by natarajan k 3
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IF the filter is still good, you don't need to change it,
but there's no way you can tell from the outside.
It's cheap insurance to change the filter too.
2007-07-17 23:23:46
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answer #7
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answered by Irv S 7
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The filters are cheap. Don't scrimp on them. Oil is the life blood of your engine. Pamper it.
2007-07-17 22:27:52
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answer #8
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answered by MensaMan 5
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My dad, who's been a mechanic for over 30 years told me "you wouldn't take a shower and put on a dirty pair of underwear." It just makes sense to change it.
2007-07-17 22:29:24
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answer #9
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answered by Ken s 2
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well everytime you change you're oil you have to change your filter!! unless you use sythetic oil then you won't have to change out the filter!!!
2007-07-17 22:22:34
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answer #10
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answered by solobarickid08 1
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