filter life

[schwartr88]

Right now I am doing 3k OCI with maxlife oil, and pureone filter. Ive decided the 3k OCI have to go, and want to increase them a few thousand miles. I know the oil can last that long, but what about the filter? When does the oil filter get "full" and start to loose efficiency? It doesnt make sence to extend the OCI if the filter is not filtering.

Thanks.

 

[Spector]

Around 12-15,000 miles on a well operating engine IMO

 

[Gary Allan]

Yep ..I'm with Spector. You'll chicken out well before the filter is shot. If you do enough mileage change it every other time.

 

[Filter guy]

When does the oil filter get "full" and start to loose efficiency?

The filter gains efficiency as it plugs up. It doesn't lose efficiency.

What can happen is as the filter gets to it's usefull service life your by-pass opens more often..which allows unfiltered oil downstream.
You won't know when this happens...

 

[labman]

This is a great murky area. As Filter Guy just said, ''You won't know when this happens...''. I guess Gary Allen is working on some of that. All the filter studies are on new filters. I am still waiting for some real proof that Fram uses such great media that it doesn't load up faster than filters with more generous amounts.

 

[LubeOiler]

I know this has been addressed before but Amsoil has some new type filters that go the full year without change. My question is if the old style went 6 mo. and lost its efficency then how can we put a # on a filter.If we drive a sludge pron car wouldn't it need changing more often.The point I am asking is why not change a filter every 6 mo. for half the price of the 12 mo. filter.Unless they drop the prices of the 1 year filter. I have seen a good UOI on a 1 year OCI but a lot more on 6 mo.I know it depends on the type of driving but why skimp on a oil filter anyway.

 

[kanling]

Unless the media begins to fail, a filter's efficiency will improve as it gets older. That's because the microscopic holes get more and more plugged up and the average size of the remaining holes gets smaller and smaller.

Of course, as this happens, the filter gets more and more restrictive... and eventually the pressure across the element would build up high enough that the bypass would open. At those times, you have no more filtering.

Personally, I think even the cheapest filters (gasp, maybe even FRAM?!?) can be used multiple intervals without excessive clogging in most applications. This opinion based on Gary's pressure drop data and also Filter Guy's pressure drop data on his used Super Tech.

 

[Matt89]

quote:

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Originally posted by LubeOiler:
I know this has been addressed before but Amsoil has some new type filters that go the full year without change. My question is if the old style went 6 mo. and lost its efficency then how can we put a # on a filter.If we drive a sludge pron car wouldn't it need changing more often.The point I am asking is why not change a filter every 6 mo. for half the price of the 12 mo. filter.Unless they drop the prices of the 1 year filter. I have seen a good UOI on a 1 year OCI but a lot more on 6 mo.I know it depends on the type of driving but why skimp on a oil filter anyway.

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Good point...in one of my cars, changing the filter is an undesireable experience, so I'd be one to use a top quality filter for a whole year.

 

[Intrepid]

So it would be safe to say that one could go a whole year with a PureOne filter? My engine is clean & quiet, and I use M1 oil....no problems. I've been changing out the PureOne every 6 months, but go 5k miles on the oil.

I also use LC20 with my M1 oil.

 

[vad]

quote:

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Originally posted by Matt89:
Good point...in one of my cars, changing the filter is an undesireable experience, so I'd be one to use a top quality filter for a whole year.

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You can use the cheapest filters for a whole year, no problem.
A properly maintained engine doesn't produce nearly enough of particles to clog up a filter even after 20K miles.

 

[vad]

quote:

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Originally posted by Spector:
Around 12-15,000 miles on a well operating engine IMO

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More like 20,000 miles.