This linked thread has been the most useful. Is there any lab that can evaluate for filter efficiency, so as to know miles-in-use vs filter efficiency after being taken out of service?You should read this thread startng from the linked post. Oil filters can become less efficienct as they load up, and it starts way before the filter is totally loaded and close to bypass delta-p.
Would you all like to see ISO 4548-12 Oil Filter Lab Testing Comparison, Efficiency & Capacity, Pressure vs Flow, Bubble Point, and Burst?
I have this as a “watched” thread, so if you do happen to start a new one, could you put a note or link in this one to direct followers to the new thread? Thanks!! Yes, no problem I can do that.bobistheoilguy.com
Most likely no more than 8 oz.I have a Honda Accord with one of those little filters. Any idea on how much oil that would be left in it after just changing the oil out?
.3qts’ishI have a Honda Accord with one of those little filters. Any idea on how much oil that would be left in it after just changing the oil out?
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Of course you could run a decent filter for two OCIs/15.000 mls/25.000 km
easily. But why should you? To save five or ten bucks?
Resusing filters carries the risk getting confused and maybe unintentionally
using it a third OCI. When you leave the filter in place you'll leave even more
dirty oil in your motor, so you're probably performing just a half oil change.
Unlikely, but not impossible the filter collapsed or someone before didn't fit
it correctly and you won't notice when you leave it.
My Mini (Purflux) and VW (Mann) use filters that are between 5 and 10 bucks.
Why should I be stingy with oil filters? My Porsche's OE filter is a little more,
but I'd even less want to skimp on it.
So in the end I'd say yes it's possible but it doesn't make much sense to me.
Perhaps some people also leave their dishwater in the sink to use it again the
next day . . . .
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Yes and yes.Most is nice, almost all is better. Do you always perform just 'most' of
a job? I expected someone to take the word 'half' literally.
ATF spill and fills comes to mind. It's even recommended in manuals. You dump about 25% with each service.
Charles, not on manuals. You'll commonly get about 75 % of the old oil out of them.
That said transmissions are a completely different matter. There's no fuel burned in them.