My Makita MAC2400 has been serving great almost a decade now. Recently I started wondering about the volume of air it has intaken over the year and that it all went through the air filter, which I have never changed. So I opened the filter housing and it didn't look too terrible:
Is it necessary to replace this filter occasionally and does mine look overdue? Here is the compressor:
Also, how frequently should the oil be changed? Unlike most small compressors, this one is lubed for quieter operation.