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Stopped by a local parts retailer to pick up air and oil filters for the daily driver. WIX XP filter was on sale for $7.99 so I grabbed one.

 

At the checkout the guy behind the counter says "this filter is for synthetic oil only". I say "that's fine". He says "okay, just want to make sure that you know that the media in this filter will shred if you top off your synthetic oil with petroleum oil". I say "um, I doubt that's true". He says "the WIX rep was here and told me so". I look over the box for a warning saying that your engine is at risk if you use this filter with petroleum-based oil. Of course there is no such warning. I put the filter back on the shelf for no particular reason--other than to make the guy's day.

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Stopped by a local parts retailer to pick up air and oil filters for the daily driver. WIX XP filter was on sale for $7.99 so I grabbed one.

 

At the checkout the guy behind the counter says "this filter is for synthetic oil only". I say "that's fine". He says "okay, just want to make sure that you know that the media in this filter will shred if you top off your synthetic oil with petroleum oil". I say "um, I doubt that's true". He says "the WIX rep was here and told me so". I look over the box for a warning saying that your engine is at risk if you use this filter with petroleum-based oil. Of course there is no such warning. I put the filter back on the shelf for no particular reason--other than to make the guy's day.

 

We use the Wix XP filters extensively, and from experience, there is absolutely no chance of that happening.

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