gardeemill 0 Report post Posted April 25, 2012 How often to change and a good brand filter to use. Also how to change it? There seems to be nothing about it in the Owners Manual or Service Manual. Quote Share this post Link to post Share on other sites
1990LS400 107 Report post Posted April 26, 2012 I'm pretty sure that the maintenance bookliet for your car says to change the air filter every 30,000 miles. How to change it? Remove the old one and put in a new one. Quote Share this post Link to post Share on other sites
Len Allen 0 Report post Posted July 17, 2012 Where is the cabin filter on the LS 400 ? Nothing in the owners manual. Quote Share this post Link to post Share on other sites
