This is my air filter at 9K miles beside it's replacement
There was chunky gritty sand in the air box as well. I would say that maybe 1.5 K of my 9K miles are dirt. Also, underneath the plug you remove from the air box is a Philips head screw you must remove as well!!
There was chunky gritty sand in the air box as well. I would say that maybe 1.5 K of my 9K miles are dirt. Also, underneath the plug you remove from the air box is a Philips head screw you must remove as well!!