I use Castrol GTX 20 W - 50, regular dino oil since 100,000 miles. My car now has 260,000 miles of hard and long distance driving. Excellent original engine in the GA 16 DE. I am on my second transmission ( I bought a used one). I am on my 4th clutch, eventhough the first three clutches really didn't waer at out that much. I love this car. get a good technician to raise your timing to 18 BTDC, adjust your RPM to 850. then throw in a K&N air filter in the air box, disconnect the hose to the EGR valve (the car will still run right anyway), and then start flogging the car daily.
Dextron II.
The 2007 Nissan Sentra has double overhead cam (DOHC).
The 2002 Nissan Sentra has double overhead cam (DOHC).
The 2014 Nissan Sentra has double overhead cam (DOHC).
The 2003 Nissan Sentra has double overhead cam (DOHC).
The 2005 Nissan Sentra has double overhead cam (DOHC).
The 2008 Nissan Sentra has double overhead cam (DOHC).
The 2010 Nissan Sentra has double overhead cam (DOHC).
The 2006 Nissan Sentra has double overhead cam (DOHC).
The 2013 Nissan Sentra has double overhead cam (DOHC).
The 2011 Nissan Sentra has double overhead cam (DOHC).
The 2004 Nissan Sentra has double overhead cam (DOHC).