Pretty much never. My first LS was purchased from a dealer 550 miles away. Did my own 50 and 200 hour service, they shipped the filters to me. The second LS was from a different dealer, but now 650 miles away... same thing, they shipped the filters to me, only needed a hydraulic hose (my mistake, so not under warranty) they drop shipped it direct from LS parts.... cost me $20 less than buying or having one made locally. BUT, and a BIG BUT, I can fix or work on just about anything. That is where the big decision has to be made.