Usually oil in the radiator or coolant in the oil is either a blown head gasket or a cracked head or block. Most often it is the gasket.
Pat
Portland, OR.
5w30
5w30 or 10w30
4.5 quarts
Engine oil 4 quarts
Engine oil 4 quarts
Radiator side of the engine, about the same height as the top of the oil pan.
The oil filter is located on the side of the engine facing the radiator
The oil dip stick on a 1999 Nissan Altima is on the side of the engine closest to the radiator. It is just behind the alternator.
back side of the engine block about half way up
head gasket may need to be replaced
The oil drain plug is located on the bottom of the engine on the oil pan. Remove with 17mm wrench and tighten to 10 Lb/Ft torque and no more. The radiator drain plug is located on the bottom of the radiator. If you can't find it simply remove the lower radiator hose to drain the radiator.
Nevermind. Finally found it wedged up in the front behind the radiator.