Average Reviews:
(More customer reviews)I can not now recommend this Denso oil filter. Although Denso is alleged to have made good products (in Japan?), the filters I recently purchased all have sizeable holes punched in the center of the clear plastic protective packaging film. I have never before seen such holes in any oil filter protective closures. Denso's US CA warehouse has agreed that the holes are apparently present for all products they now have in stock, but Denso refuses to even discuss the technical whys and wherefores, or whether/if/how they control the process of making these holes so as to adequately control contaminant introduction to the filters. Particles, including those from the fractured as-punctured plastic film, are unavoidably introduced into and present in the DOWNSTREAM side of the oil filter because of these (vent?) holes. From there, the contaminants are ready to enter and immediately damage your engine bearings! I've taken numerous photos and will be posting additional details on appropriate forums. Earlier Denso oil filters reportedly did not have such packaging holes. But, in case you do buy them, at least vacuum out the particles before installing them. Bob.
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