I've always done them as soon as they start to look a bit grubby - like this one. Just wondered if I was being overly fussy. Appears you guys think I'm doing the right thing. Which is what I advise everyone else on here to do - cheap as chips circa £5 paper filter, just change it frequently.
I personally would go for replacing it for even the limits that it has mentioned because they are cheaper and secondly changing them shows a clear difference in the torque!
I personally would go for replacing it for even the limits that it has mentioned because they are cheaper and secondly changing them shows a clear difference in the torque!
It's also true that these filters filter best when dirty. I think that filter looks like it's in it's prime, fair enough if you need power then replace it at the cost of having slightly larger particles pass through.
I swap mine out every 2 years which is about 15K miles. I never notice a boost in performance after changing it. So I figure I'm alright.