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I've used KN303 for 3 changes now, previously I used Mobil 110
 
how did it take almost 48 hours for that question to get answered??

I just happened to see it in the unanswered threads tab at the top of the screen,
 
303 for me too. I believe the 204 is slightly smaller to account for clearance in some engines. Obviously we don't have a clearance issue.
 
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