Either as the choice is yours. If you use synthetic then extend the oil change interval by 2,000 miles.
The 2008 Nissan Altima runs on regular unleaded.
The 2008 Nissan Altima has a 6-speed manual.
The 2014 Nissan Altima runs on regular unleaded.
The 2004 Nissan Altima runs on regular unleaded.
The 2002 Nissan Altima runs on regular unleaded.
The 2010 Nissan Altima runs on regular unleaded.
The 2011 Nissan Altima runs on regular unleaded.
The 2007 Nissan Altima runs on regular unleaded.
The 2006 Nissan Altima runs on regular unleaded.
The 2012 Nissan Altima runs on regular unleaded.
The 2005 Nissan Altima runs on regular unleaded.
The 2013 Nissan Altima runs on regular unleaded.