It shouldn't hurt anything until you get into the colder months. But, 5w30 is the recommended oil for that car. 10w30 is also a suitable oil down to 0*F.
Where is the oil sending unit on a 2000 dodge neon?
4.5 quarts
The big pan underneath with the oil drain plug in it
2000 dodge neon
exactly 4.5 quarts and i strongly recommend synthetic 5w30 for a 2000 neon
the oil plug is located on the deepest part of the oil pan.
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the oil pump sits on the nose of the crankshaft, behind the timing belt sprocket.
What oil viscosity is correct for dodge neon 1995
5w30
10w40 mobil1
Most likely causes are a failed headgasket or cracked/warped head.