Because oil is getting into the cylinders and is being combusted along with the fuel.
Two main routes are 1) from the piston rings being worn -or- 2) from valve train wear, most likely worn valve guides.
Either way will require an engine "top" overhaul at the least. Depending on the condition of the rest of the car it may or may not be economical to do this repair.
how do you reset the oil light on a 2000 altima
A 2002 Nissan Altima will hold approximately 4.5 quarts of oil. The recommended oil type for the car is 10 W 30.
5W-20
Running over a big rock worked for me.
There will be approximately 2.6 quarts of automatic transmission fluid for a 2002 Nissan Altima. The transmission oil can be purchased at any auto parts store.
The Oil capacity of a 2.4 Nissan Altima transmission is 2.4 liters.
You need to change the filter with every oil change. Nissan recommends every 3750 miles.
The oil capacity on a 1993 Nissan Altima is approximately 4.1 quarts. The oil that should be used is 5W-30.
Does this oil filter fit a 2008 Nissan Altima 2.5L
The oil pump for a Nissan Altima is located inside the oil pan and it is attached to the oil pickup tube. The oil pump is responsible for circulating the oil in the car.
Nissan recommends 5W/30 Engine-oil for Nissan Altima (same as for Maxima) for 95, 96, 97, ... later years.
on the oil pan