Re: Mobile 1 Extended Performance
 

Frank,

Most have anti-drain back these days, but some valve designs are more
effective than others:

http://minimopar.knizefamily.net/oilfilterstudy.html

Interestingly, Canadian Tire Motomaster/Formula One filters are all
rebranded Frams. Same is true of Quaker State/Pennzoil. If you're buying
filters at Canadian Tire, get K&N. Elsewhere, try Carquest Premium (aka
NAPA Gold).

Even some Mopar filters are Frams in disguise:

http://minimopar.knizefamily.net/oil...udy-mopar.html

Steve
http://xjeep.dyndns.org


FrankW wrote:
> Well I wouldn't be surprised if the cheapest Crappy tire
> filter didn't have one. Actually someone told me that some don't.
> Didn't mention a brand though.
>
> Jerry Bransford wrote:
>
>> I haven't heard of any oil filter that doesn't have a check valve
>> Frank. Even the cheapest Fram filters have that.

Re: Mobile 1 Extended Performance
 

Did you guys see this link as posted in the other Mobil One thread?
http://minimopar.knizefamily.net/oilfilters.html
Although one man's un-qualified test, it's good info.

JimG

"Mike Romain" wrote in message ...
> The ones that call for a backflow valve get them, especially the CT
> ones!
>
> I do not think the filter on the 258 has one because the filter sits
> down so it can't empty out by itself. Not sure about the 4.0 filters.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> FrankW wrote:
>>
>> Well I wouldn't be surprised if the cheapest Crappy tire
>> filter didn't have one. Actually someone told me that some don't.
>> Didn't mention a brand though.
>>
>> Jerry Bransford wrote:
>>
>> > I haven't heard of any oil filter that doesn't have a check valve
>> > Frank.
>> > Even the cheapest Fram filters have that.
>> >
>> > Jerry
>> >
>> > FrankW wrote:
>> >
>> >> I heard somewhere that the better filters have a check valve
>> >> to prevent the back flow of oil. This true?
>> >> I always get the mopar filter, but which filters are
>> >> considered better than OEM?
>> >>
>> >>

Re: Mobile 1 Extended Performance
 

Did you guys see this link as posted in the other Mobil One thread?
http://minimopar.knizefamily.net/oilfilters.html
Although one man's un-qualified test, it's good info.

JimG

"Mike Romain" wrote in message ...
> The ones that call for a backflow valve get them, especially the CT
> ones!
>
> I do not think the filter on the 258 has one because the filter sits
> down so it can't empty out by itself. Not sure about the 4.0 filters.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> FrankW wrote:
>>
>> Well I wouldn't be surprised if the cheapest Crappy tire
>> filter didn't have one. Actually someone told me that some don't.
>> Didn't mention a brand though.
>>
>> Jerry Bransford wrote:
>>
>> > I haven't heard of any oil filter that doesn't have a check valve
>> > Frank.
>> > Even the cheapest Fram filters have that.
>> >
>> > Jerry
>> >
>> > FrankW wrote:
>> >
>> >> I heard somewhere that the better filters have a check valve
>> >> to prevent the back flow of oil. This true?
>> >> I always get the mopar filter, but which filters are
>> >> considered better than OEM?
>> >>
>> >>

Re: Mobile 1 Extended Performance
 

Did you guys see this link as posted in the other Mobil One thread?
http://minimopar.knizefamily.net/oilfilters.html
Although one man's un-qualified test, it's good info.

JimG

"Mike Romain" wrote in message ...
> The ones that call for a backflow valve get them, especially the CT
> ones!
>
> I do not think the filter on the 258 has one because the filter sits
> down so it can't empty out by itself. Not sure about the 4.0 filters.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> FrankW wrote:
>>
>> Well I wouldn't be surprised if the cheapest Crappy tire
>> filter didn't have one. Actually someone told me that some don't.
>> Didn't mention a brand though.
>>
>> Jerry Bransford wrote:
>>
>> > I haven't heard of any oil filter that doesn't have a check valve
>> > Frank.
>> > Even the cheapest Fram filters have that.
>> >
>> > Jerry
>> >
>> > FrankW wrote:
>> >
>> >> I heard somewhere that the better filters have a check valve
>> >> to prevent the back flow of oil. This true?
>> >> I always get the mopar filter, but which filters are
>> >> considered better than OEM?
>> >>
>> >>

Re: Mobile 1 Extended Performance
 

Hi Frank,
The check valve is what you see in the radius holes, like the oil
is pump through the rubber looking flapper valve to the out side of the
filter element to enter to the center part that's screwed on the pipe
connected to the engine's oil galleys. Here's probably different in the
qualities of the bypass valves attached to the other end of the
screw-on, that would be very important in an all out hot rod. I can just
barley recognize those valves in this picture:
http://----------.com/mirror/filter-fram2.gif
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

FrankW wrote:
>
> Well I wouldn't be surprised if the cheapest Crappy tire
> filter didn't have one. Actually someone told me that some don't.
> Didn't mention a brand though.

Re: Mobile 1 Extended Performance
 

Hi Frank,
The check valve is what you see in the radius holes, like the oil
is pump through the rubber looking flapper valve to the out side of the
filter element to enter to the center part that's screwed on the pipe
connected to the engine's oil galleys. Here's probably different in the
qualities of the bypass valves attached to the other end of the
screw-on, that would be very important in an all out hot rod. I can just
barley recognize those valves in this picture:
http://----------.com/mirror/filter-fram2.gif
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

FrankW wrote:
>
> Well I wouldn't be surprised if the cheapest Crappy tire
> filter didn't have one. Actually someone told me that some don't.
> Didn't mention a brand though.

Re: Mobile 1 Extended Performance
 

Hi Frank,
The check valve is what you see in the radius holes, like the oil
is pump through the rubber looking flapper valve to the out side of the
filter element to enter to the center part that's screwed on the pipe
connected to the engine's oil galleys. Here's probably different in the
qualities of the bypass valves attached to the other end of the
screw-on, that would be very important in an all out hot rod. I can just
barley recognize those valves in this picture:
http://----------.com/mirror/filter-fram2.gif
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

FrankW wrote:
>
> Well I wouldn't be surprised if the cheapest Crappy tire
> filter didn't have one. Actually someone told me that some don't.
> Didn't mention a brand though.

Re: Mobile 1 Extended Performance
 

Yep, presence of the 'anti-drain back' valve depends on the application.
Many are still produced without the valve. I don't think though that you
can find any non-valve filters listed for the 4.0L.

Steve
http://xjeep.dyndns.org


Mike Romain wrote:
> The ones that call for a backflow valve get them, especially the CT
> ones!
>
> I do not think the filter on the 258 has one because the filter sits
> down so it can't empty out by itself. Not sure about the 4.0 filters.
>>
>>Jerry Bransford wrote:
>>
>>>I haven't heard of any oil filter that doesn't have a check valve Frank.
>>> Even the cheapest Fram filters have that.

Re: Mobile 1 Extended Performance
 

Yep, presence of the 'anti-drain back' valve depends on the application.
Many are still produced without the valve. I don't think though that you
can find any non-valve filters listed for the 4.0L.

Steve
http://xjeep.dyndns.org


Mike Romain wrote:
> The ones that call for a backflow valve get them, especially the CT
> ones!
>
> I do not think the filter on the 258 has one because the filter sits
> down so it can't empty out by itself. Not sure about the 4.0 filters.
>>
>>Jerry Bransford wrote:
>>
>>>I haven't heard of any oil filter that doesn't have a check valve Frank.
>>> Even the cheapest Fram filters have that.

Re: Mobile 1 Extended Performance
 

Yep, presence of the 'anti-drain back' valve depends on the application.
Many are still produced without the valve. I don't think though that you
can find any non-valve filters listed for the 4.0L.

Steve
http://xjeep.dyndns.org


Mike Romain wrote:
> The ones that call for a backflow valve get them, especially the CT
> ones!
>
> I do not think the filter on the 258 has one because the filter sits
> down so it can't empty out by itself. Not sure about the 4.0 filters.
>>
>>Jerry Bransford wrote:
>>
>>>I haven't heard of any oil filter that doesn't have a check valve Frank.
>>> Even the cheapest Fram filters have that.