I'll take your criticism, but the one thing I'll confront you about is the oil filter. Well there is nothing wrong with the filter, it's just missing a feature.
OEM filters do not have a backflow valve to keep dirty oil from draining back into the engine when the car is off. Making your filter do twice the work at startup when it filters out dirty oil that it just got done filtering. It just keeps the containements that form in the oil from use out of the engine better. There are other filters out there with the same valve, doesn't have to be K&N, but OEM filter is pretty basic, but adequate and gets the job done.
And your right my preference for the welded nut determines most of my choice. But you have to admit how much easier it would be to take out a filter if you could grab the filter from the end and not around the filter. doesn't make changing oil any cleaner as it still drips all over the A/C hoses, but there is alot less struggling.
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