2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
View Poll Results: What do you use?
K&N
18
17.48%
Bosch
3
2.91%
Mobil1
10
9.71%
Fram
7
6.80%
AC Delco
0
0%
Pennzoil
0
0%
Motorcraft
1
0.97%
Beck/Arnley
0
0%
Purolator
12
11.65%
Other
12
11.65%
Mazda OEM
40
38.83%
Voters: 103. You may not vote on this poll

Best Oil Filter

Old Aug 25, 2008 | 01:16 PM
  #26  
Burnin_streets's Avatar
87 NA build in progress
 
Joined: Oct 2007
Posts: 293
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From: Portland
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?
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Old Aug 25, 2008 | 01:36 PM
  #27  
Icemark's Avatar
Former Moderator. RIP Icemark.
 
Joined: Apr 2001
Posts: 25,896
Likes: 24
From: Rohnert Park CA
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.
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Old Aug 25, 2008 | 01:41 PM
  #28  
socalrotor's Avatar
Rotary Freak
Tenured Member 15 Years
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From: southbay
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.
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Old Aug 25, 2008 | 02:25 PM
  #29  
island-fc's Avatar
Full Member
Tenured Member 05 Years
 
Joined: Jul 2007
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From: Vancouver, Canada
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...
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Old Aug 25, 2008 | 02:38 PM
  #30  
Texas_Ace's Avatar
Rotary Enthusiast
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From: Texas BABY!
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.
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Old Aug 25, 2008 | 04:17 PM
  #31  
ecko's Avatar
E85 Powered
Tenured Member: 15 Years
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Joined: Oct 2007
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Likes: 1
From: Long Island NY
thanks for talking me out of buying fram never new it was that bad.
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