Altima 2.5 L4-2.5L (QR25DE) (2002)
b. Tighten the upper oil pan bolts in the order as shown.
Bolt No.10, 11, 18 indicate a double tightening in the sequence of bolt Nos 1, 2, 3.
NOTE: Refer below for specified bolt sizes:
M6 x 20 mm (0.79 inch): No.19, 20
M8 x 25 mm (0.98 inch): No.1, 3, 4, 9
M8 x 45 mm (1.77 inch): No.2, 5, 6, 7, 8, 17
M8 x 100 mm (3.97 inch): No.12, 13, 14, 15, 16
c. Apply Genuine RTV Silicone Sealant, or equivalent to the lower oil pan.
d. Tighten the lower oil pan bolts in the numerical order shown.
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Wait at least 30 minutes after the oil pans are installed before filling the engine with oil.
INSPECTION AFTER INSTALLATION
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Check for any engine oil leaks with the engine at operating temperature and running at idle.