I have a valid multiple entry 60 day Chinese business visa that I use to travel for work. I am planing a trip to China that is only for vacation, can I use my business visa or do I need a tourist (L) visa also?
Whenever I or anyone I know went to China for work, we/I always entered in on a tourist visa. Usually, there's no distinction or separation between the two.
So with a business visa, you should be able to enter into the country and do some touring/sightseeing. Nothing really prevents from traveling around the country. Likewise, if you have a tourist visa, you can travel around and conduct some business.
Here's an excerpt from this site to confirm:
Visas are issued to permit entry into a country for a specific purpose: to allow travel for leisure, or to conduct business activities. In general, 'tourist' visas are issued specifically for the purpose of travel for pleasure, while a 'business' visa generally permits a traveler to engage in normal business-related activities. You need a supporting letter to apply for business visa. However, there is no distinctive line between tourist visa and business visa. In another word, tourist visa will not prevent you from conducting business in China.
Hope this helps!