Here is another link that you might want to check out if you own Frieghtliner Chassis coach.
Know Your Frieghtliner Chassis: http://www.freightlinerchassis.com/pdf/ ... hassis.pdf
This a PDF file that is large 4-1/2 MB, 28 pages, so it takes a few minutes to load if you are using a dial up connection. What I did was load it and then hit "Save a Copy" at the top and saved it to my computer/laptop. It has a lot of information, maintenance and operation tips. It has part numbers of the filters, etc. to maintain the chassis/engine. Since it in my laptop and it always travels with us, I always have the information on hand if needed.