Prova Oil Filter - Most Subaru Models
The Prova Oil Filter is a must for those who want the best. With improved filter media this filter can capture particles as small as 12 microns whereas the stock filter is good to about 30 microns.
The pressure relief valve has been enhanced to keep the pressure up to make sure the engine gets proper oil pressure.
RalliTEK recommends changing the oil more often due to this filters ability to catch finner particles.
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