Drain oil in filter when reusing?

[Lubener]

Originally Posted By: DrDave
I drain the oil out of the pan. Put the plug back in and add a quart of oil and idle for a minute. This oil circulates through the system flushing the filter and the oil galley area. Now drain the flushing quart out and refill sump.

Simple.

Dave


This is the silliest comment I have read. Run an engine with roughly 1.5 quarts (including filter) to flush and save an old filter ??? Any contaminants are suspended in the warm oil as you drain anyway.This does absolutely nothing beneficial.

 

[Sayjac]

Originally Posted By: SilverC6
Originally Posted By: Malo83
Originally Posted By: circuitsmith
In other threads it's mentioned that leaving a little old oil behind can help, due to "broken in" anti wear additives etc.
Some even leave the old filter in for a couple weeks after the second oil change.
Yeah Right!!! who's the oil expert that thought this one up

This expert must wipe his a$$ a couple of weeks after he takes a [censored].

I have to agree. I know bitog is all about being anal retentive (pun intended) but as far I'm concerned that idea is wayyyyyy too far out there 'for me'. One thing to drain the filter and replace, which is not best practice. Another to leave it on for awhile then come back a couple weeks later and change it. No. Like to see to any significant quantifiable advantage over the life of the engine and/or vehicle. Actually as I wouldn't do it ever, no I wouldn't. Doesn't matter to me.

As for topic, best practice when reusing filter is to leave in place. Exactly what I did with recent Tacoma Ultra filter two oci oil change. Filter sits on side of engine just slightly tilted up to dome from horizontal. Relatively little oil drains when removing filter.

The main danger in removing, draining and replacing filter is a deformed/weakened sealing gasket and not being properly sealed second time or failing at some point later. So, if one has made up their mind to use the filter twice, just leave it on. If one can't do that, best to change filter with the oil. This all refers to spin on applications.

 

[edwardh1]

Originally Posted By: EdwardC
I leave it. A big part of my reason for leaving the filter on for 2 OCIs is that I don't want to go through the effort of replacing the filter (including the inevitable spilling on the frame and garage floor). If I'm removing the filter, I'm putting a new one back on.



yes I agree

 

[circuitsmith]

For those who didn't see the links:

https://bobistheoilguy.com/forums/ubbthreads.php/ubb/showflat/Number/4147988/Searchpage/2/Main/256133/Words/two+weeks/Search/true/Re:_How_Realistic_Is_This_Theo#Post4147988

https://bobistheoilguy.com/forums/ubbthreads.php/ubb/showflat/Number/4147475/Searchpage/2/Main/256110/Words/two+weeks/Search/true/Re:_Always_using_the_same_oil_#Post4147475

 

[Garak]

Originally Posted By: Sayjac
I have to agree. I know bitog is all about being anal retentive (pun intended) but as far I'm concerned that idea is wayyyyyy too far out there 'for me'. One thing to drain the filter and replace, which is not best practice. Another to leave it on for awhile then come back a couple weeks later and change it. No. Like to see to any significant quantifiable advantage over the life of the engine and/or vehicle. Actually as I wouldn't do it ever, no I wouldn't. Doesn't matter to me.

There is some reasonable scientific thinking behind it, and the links are posted, and several people in this thread need to read them before passing judgement. Of course, it probably won't amount to a hill of beans over the life of an engine. Then again, neither will choosing a Fram Ultra or a Wix over the cheapest jobber filter you can find and fit. But, we still do have the oil filter subforum.

 

[Kuato]

Originally Posted By: jeepman3071
Originally Posted By: EdwardC
If I'm removing the filter, I'm putting a new one back on.


This.


Yep don't mess with the old gasket - plus, if the ADBV is working right you won't get much oil out. At all.

 

[Sayjac]

Originally Posted By: Garak
Originally Posted By: Sayjac
I have to agree. I know bitog is all about being anal retentive (pun intended) but as far I'm concerned that idea is wayyyyyy too far out there 'for me'. One thing to drain the filter and replace, which is not best practice. Another to leave it on for awhile then come back a couple weeks later and change it. No. Like to see to any significant quantifiable advantage over the life of the engine and/or vehicle. Actually as I wouldn't do it ever, no I wouldn't. Doesn't matter to me.

There is some reasonable scientific thinking behind it,.... Of course, it probably won't amount to a hill of beans over the life of an engine. Then again, neither will choosing a Fram Ultra or a Wix over the cheapest jobber filter you can find and fit......

Might be some thinking, reasonable or not behind it, but as noted in my reply to another poster here, doesn't matter to me.

Saw it when it was first posted and didn't comment then because I didn't care there either. Commented now because I happen to agree with the poster I quoted. Afaik, that's still permissible on this oil filter subforum. I'm not going back under my car two weeks after changing the oil to pull a filter and add make up oil. And, I wouldn't put it in the same category as one choosing to use a more efficient filter installed at the time of oil change or using it twice which is the topic of this thread.

 

[Garak]

It's closer than you care to admit. It's just far less convenient than using a filter twice or choosing a more upscale filter. But, they are all still well into the land of OCD, which is what we do here.

Outside of BITOG, no one considers FCIs or which filter is better, aside from hearing from their dad's cousin's mechanic that the orange can will kill their motor or something similarly strange. You or I and lots of other BITOGers would be impressed if a quick lube gave us a Fram Ultra or Wix with an ordinary oil change. The bulk of the public would be wondering why they got an expensive filter, or wouldn't notice in the least, or wonder what an oil filter is.

Oh, and for the topic, for what it's worth, I wouldn't break the seal if reusing a filter. Of course, a big filter holds so much more used oil, and a small filter has less dirt carrying capacity, so I'd be wondering in either case, though.

 

[Sayjac]

I don't pretend to read other minds, but for me, far less convenient means far less practical. That puts it far outside choosing to use a more efficient filter, more so for using a filter twice. Thus why I agree with the humorous post I quoted.

 

[Run]

Don't break the seal until its time to change the filter.

 

[MoreCowbellAz]

FWIW +1 on just leaving the filter alone if reusing. In fact I just did this routing this morning on my 07 Prius, have a Napa Platinum filter on there with 8k on it and it's going to stay in service for another 10k with a new batch of M1 AFE 0w30. I figure I'm in the more efficient part of the curve right now for that filter so makes some sense (to me at least).

 

[Garak]

Originally Posted By: Sayjac
I don't pretend to read other minds, but for me, far less convenient means far less practical. That puts it far outside choosing to use a more efficient filter, more so for using a filter twice. Thus why I agree with the humorous post I quoted.

Of course, it depends upon the person. In the old Audi, I didn't even have to really get under the car to change the filter. The limiting factor in the oil change time in that car was the time draining. It was that easy. So, given my facilities, it wouldn't have been a stretch. The G37, well, that would be a little more of a hassle. And, for someone who goes to a shop to get oil changed, this wouldn't work well at all.