Bought mine on sale when car was new. They have 4 years of use and 34k kilometres of use and show very little dirt. They have provided a slight increase in power and have never set a dtc code. A good buy in my opinion. I kept the oem filters just in case all of the complaints on this forum might come true. Use very little oil when cleaning and recharging as per all of the comments and you should be fine for many years.
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