if i can find a filter that is the same diamater and has the oring in the right palce and all that but taller than the usuall filters would it be ok to use?

 

Most auto parts stores will have a reference book that lists oil filters by thread size, length and diameter. The problem is that some oil filters have bypass valves that are set for different pressures than others. Make certain that the oil filter you end up using has the same bypass valve pressure setting as the Mazda filter.

 

I had be using a Mazda OEM filter and noticed something strange when I went to the purolator pure one filter. Higher pressure. I have an aftermarket gauge and the pressure was higher.

With the oem filter as the oil got hoter (I have an oil temp gauge) the pressure would drop. (I know this is normal).

With the Pure one the pressure drop was not nearlly as pronounced. Rather strange and I do not know why.

James

 

The Purolator oil filters (not just the PureOne oil filters) have a LOT of pleats, which could cause unnecessary resistance to oil flow.&nbsp The "Oil FAQ" floating around states this very explicitly.



-Ted

 

What I was saying though was the pressure was lower overall with the OEM filter. Higher with the purolator. I think it is a great filter. Just makes me scratch my head. Wish I could talk to engineers sometimes. Or ted...they should be about the same

James

 

here's that test:

http://www.scuderiaciriani.com/rx7/oil_filter_study/

I think you'll notice that the Purolator is only really recommended in the Premium Plus version rather than the Pure One or Motorcraft versions because of the additional restrictions caused by the pleats.

and his study says: But also he likes the ACdelco (which also builds the domestic versions of Toyota's filters which have always been rated very high).

My personal feeling is the OEM Mazda filter or the Mobil 1 should be the only filters used.

 

Here's my experience...

I currently have a PureOne oil filter in my car.&nbsp I run a VDO oil temp and oil pressure gauges in my car - I watch them religiously.&nbsp I haven't seen that much of a deviation than my previous use of Fram (gasp) oil filters in the past.

I do have Mobil1 oil filter sitting on my desk right now waiting to be installed (last oil change was 4k miles ago ), but the $12 price tag versus the $6 PureOne oil filter is a little hard to swallow.



-Ted

 

i was in the past running a fram filter and when i read that article or that research what ever you wana call it i switched to the mobil 1 filter and ive noticed that the preasure stays a little higher than with the fram. oh yeah nm that is most likely caused by me switching from 10w-30 to 20w-50...

 

I've got a fram filter in my N/A right now, am I going to have a problem? I'll be switching back to a Mazda filter next oil change.

 

take that link from icemark and you will see the differences in oil filters fram filters arent so good

 

I can get the AC Delco filter for my N/A for $3.56 day in and day out, where as the Mazda filter (built for them by ?) cost $9.95! As the study seemed to indicate the AC Delco performed well, so I figure not only does it work but it saves me a few bucks too!

 

Well it kinda comes down to who cares if you replace a part that cost $10 every couple of months?

I know people are trying to be cheap and get the cheapest filter possible, but why? The difference between cheap and good is less than the cost of a whopper value meal.

My other take on oil filters, is that if they change the oil pressure from what it runs at with a stock filter, then it is not the right filter for the car.

 

Icemark,

You never cease to surprise me with these nuggest of wisdom. Excellent reference!!!!:

http://www.scuderiaciriani.com/rx7/oil_filter_study/

I've been erring to the OEM Mazda filter when ever I can find them. But, gone with FRAM when they weren't available when needed because of what I thought an excellent reputation. Won't do that anymore.

Glad I caught this thread. Rosanna (Vert) deserves the best.