I sent this question to Purolator.I do not and have not used Fram oil filters in quite some time.I am just not to keen on the Frams construction.Anyway,here goes.

I am writing to ask why your oil filters use metal endcaps instead of cardboard like FRAM does.FRAM has a very high rating on their filters.The cardboard caps should be easier to glue and should make a stronger bond to the filter element and endcaps while making it almost impossible for the internals to leak.Would not it be harder to glue the element to metal than to cardboard? This also would make your filters cheaper to produce so then maybe your filter would be cheaper and more people would by them.Also with the better gluing they wont have to worry about the filter leaking.If FRAM can have filters that are designed and built this way,then why cant Purolator? A good seal in the filter means that no dirty oil can bypass the element,this keeps the oil cleaner.With metal,wouldn't it be easier to have a bad seal and cause leaks? FRAM oil filters also use glass in their element to trap more dirt than regular paper.I have used Purolators before but with FRAM having a higher rating why should I use Purolator? The FRAMS are almost impossible to leak,can you say that about the Purolators?

I will post a response if and when I get it.

 

This is the response I got this morning from Purolator.

Sir:
The fact is Purolator makes filters which use both paper and metal end caps depending upon the filter under consideration. As to the merits of each, I am not competent to discuss that issue. I will forward your message to our engineering department to see if they can shed some light on your request. As to the use of glass in the Fram filter media, I have no knowledge of their media, but Purolator filter medias have been developed through 75 years of efforts in the automotive filter industry to give quality service for consumer vehicles, and in all test data that I have seen compare favorably in function and price with any filters on the market at this time.

Tom (Filter Hot Line)

If they give me any more info,I will try and post it.

 

purolaters are good. i had to use one once on my explorer once when they didnt have a mobil 1. the worst one i tried was a ACDelco.

 

PUROLATERS RULE!
FRAMS SUcK!

 

How do you decide whats worst? AC Delco is simmilar to a Supertech or Bosch.

 

whats wrong with supertech or bosch

 

acdelco was a pain in the *** to get on for some reason. plus got clogged rather quickly with mobil 1. i think it was in bypass when i got it off

 

Nothing.....That was my point

 

anyone ever tried supertech oil or supertech oil filters and what did you think of them