Should the gear on a 1999 discovery be in L N or H during normal driving conditions on a street or highway?

FOR NORMAL ON ROAD DRIVING THE TRANSFER CASE SELECTOR SHOULD BE IN "H"......."L" STANDS FOR LOW AND "N" STANDS FOR NEUTRAL.....MOVING IT TOWARDS THE LEFT IN ANY TRANSFER CASE GEAR "LOCKS" THE CENTRE DIFF....SHIFTS BETWEEN GEARS AND LOCKING AND UNLOCKING IS MOST EASILY AND SIMPLY DOWN WHEN STOPPED AND AUTO OR MANUAL SHIFT IN "NEUTRAL"AND AT IDLE SPEED - DIFF IS LOCKED ONLY WHEN DIFF LIGHT IS "ON" AND UNLOCKED ONLY WHEN THAT LIGHT IS "OFF".....CONSULT THE OWNERS/OPERATORS MANUAL FOR MORE DETAILS AND ADVICE...THIS WAS A VERY BRIEF ANSWER/DESCRIPTION If you are talking about the 4wd selector. Put it in N. Read your owners manual. Don't have one then get one. Thanks for the info! You know, I am looking to purchase an owners manual - I just bought the Discovery, it didn't come with an owners manual and I needed an answer fast. Ypu are unlikely to find and owners manual at a salvage yard for your Discovery. You could purchase one from a dealer or here. http://www.samarins.com/maintenance/manual.html There are many sources online. Type "automobile owners manual" in your search engine.