In the shop we always used White Lithium Grease on door hinges. It is best to use the paste in a can and apply with a brush. An easier method is the spray-on can of White Lithium Grease but it is messier and does not last as long. Apply it to the two hinges and the part that keeps the door open. You can also use it on the lock hardware (not the key tumbler). Great for hood and trunk hinges too. Any auto parts store will have both types and the right brush. It also (the paste only) works great on metal to metal brake parts ie; drum type backing plate, pins, spring contacts, adjuster, E-brake Etc and for the pins (only) on disk brakes. Two references I found are below (note the important info for brakes.)
http://www.extremehowto.com/xh/article.asp?article_id=60343
http://www.brakeandfrontend.com/Article/38662/brake_lubricants_high_temperatures_require_high_performance_products.aspx