Re: relative effectiveness of oil filters

[bearbvd@domain.elided (Greg Hermann)]

At 10:56 PM 12/30/02, skippatnode wrote:
>Subject: relative effectiveness of oil filters
>>

It's _very_ hard to find reliably accurate data on the capabiities of
automotive application oil filters, but most oil filters DO have a rating ,
basically in terms of what size particles they will allow to pass.

Industrial grade oil filters (cannister style !!) , such as those meant for
BIG refrigeration compressors, are available with ratings as good as 3
microns (3 x 10^-6 meters). I doubt that many automotive oil filters come
within a factor of 5 of that small a particle size rating, but I suspect
that even trying to find a mfgr. who will PUT such a rating on their
filters would be a bit of an adventure !!

Greg

>> Anyone know if spin-on 2000 oil filters are better or worse, from a
>filtering perspective, than the 1750 and earlier can-type filters?  I know
>there are variations between brands of spin-ons, and that they're more
>convenient than the can type.  Thanks
>>
>> Andrew Watry
>
>Just a gut feeling, but spin on filters are newer technoligy and therefor I
>feel they should filter better.
>Also, every cannister filter I have ever owned had a questionable sealing
>system inside and I'm not sure there wasn't some bypass oil around the
>filter.
>And, the convenience is great!!  I put a Hurlock adapter on the Duetto, and a
>PH8A (Big sucker!) filter.  Works great.  (No financial affiliation,
>etc-----)
>Skip
>67 Duetto
>Norfolk Va
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