2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
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K&N
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16.67%
Bosch
3
2.94%
Mobil1
10
9.80%
Fram
7
6.86%
AC Delco
0
0%
Pennzoil
0
0%
Motorcraft
1
0.98%
Beck/Arnley
0
0%
Purolator
12
11.76%
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11.76%
Mazda OEM
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39.22%
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Best Oil Filter

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Old 08-25-08, 01:16 PM
  #26  
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Originally Posted by Icemark
Yes. The 4.0 filter is probably bigger than the one spec'd for the Mazda under 2.0L motors, but as far as construction it should be identical.
Would there be a benefit to having a larger filter on the motor?
Old 08-25-08, 01:36 PM
  #27  
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Originally Posted by Burnin_streets
Would there be a benefit to having a larger filter on the motor?
some people claim there is... mostly from the added capacity of the oil system.

The draw back will be if you were using filters that have leaky (or don't have) anti drain back valves.

For example using a oversized Fram, with their leaky anti-drain back (90% of Frams in my testing allowed the oil to seep out), can cause a dry run for the first couple of minutes, because not only does the motor need to pump the oil around, but it must first fill up the oil filter before it can.

So too big of a filter that needs to be pressurized can result in the oil system taking longer to pump through the engine... causing increased wear everywhere in the engine.

But probably not as much of an issue if the filter has a good working anti drain back valve.
Old 08-25-08, 01:41 PM
  #28  
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For high end motors, it isn't too much trouble to build some oil pressure before firing it up, and seems well worth it in the long run..... imo of course.
Old 08-25-08, 02:25 PM
  #29  
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Originally Posted by Texas_Ace
I just put in an AMSoil filter. Quick search before i bought it and it seemed to filter better then most and last longer too boot (not like it would be used longer then 30000 miles anyways but good to know).
i sure hope you wouldn't use it longer than 30,000 miles...
Old 08-25-08, 02:38 PM
  #30  
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LOL, i meant 3000 miles. I change my oil every year reguardless, and usually my cars have right about 3000 miles at that point.

Though it IS rated for 30,000 miles when used with AMSoil (which i am also using), no way would i trust it that long though.
Old 08-25-08, 04:17 PM
  #31  
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thanks for talking me out of buying fram never new it was that bad.
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