I picked up 2 STP oil filters for the GM 3.6L. This is the open element style, not the can. I've used them before and knowing they were made by Champion Labs in USA I felt it was a decent filter. I get home and notice that the 2 filters I got were each different..same number and box look but different. Seems Autozone changed from USA made Champion labs to a Chinese made Best Products version. Comparing the 2, the box on the USA made one is 99% efficiency and 93% on the Chinese. But I have to say the Chinese made filter looks BETTER, nice tighter pleats and COMES with the new O-ring! The Champ labs version did not include an O-ring.
So, I am happy and, besides the slightly lower efficiency rating, the new Chinese filter looks better and the O-ring is a welcome addition to the box.
Sorry no pictures - if you really want some, I will need help doing that lol
So, I am happy and, besides the slightly lower efficiency rating, the new Chinese filter looks better and the O-ring is a welcome addition to the box.
Sorry no pictures - if you really want some, I will need help doing that lol
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