Quote:
Originally Posted by Mt Tam I am
Pages 9-2 to 9-5 of the 2009 370 handbook.
Engine oil with API Certification Mark*2, *3
*2: For additional information, see later in this paragraph for engine oil and oil filter recommendation.
*3: NISSAN recommends Genuine NISSAN Ester Engine Oil, which is available at a NISSAN dealer.
1. 2.
API certification mark API service symbol
STI0505
tional Lubricant Standardization and Approval Committee (ILSAC) certification and SAE vis- cosity standard. These oils have the API certification mark on the front of the container. Oils which do not have the specified quality label should not be used as they could cause engine damage.
Selecting the correct oil
It is essential to choose the correct grade, quality, and viscosity engine oil to ensure satisfactory engine life and performance, see “CAPACITIES AND RECOMMENDED FUEL/ LUBRICANTS” earlier in this section. NISSAN recommends the use of an energy conserving oil in order to improve fuel economy.
Select only engine oils that meet the American Petroleum Institute (API) certification or International Lubricant Standardization and Approval Committee (ILSAC) certification and SAE vis- cosity standard. These oils have the API certification mark on the front of the container. Oils which do not have the specified quality label should not be used as they could cause engine damage.
Good luck
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This, when Nissan wrote the GT-R's oil recommendation they wrote it differently, they made their warranty dependent on the oil used.
"*1: Mobil 1 (0W-40) (100% synthetic) is the factory fill oil. The VR38 engine with its plasma-sprayed bores was developed using this oil. NISSAN cannot ensure proper engine operation and durability if other 0W-40
synthetic oil is used. If Mobil 1 (0W-40) is not available, Mobil 1 (10W-40) (100% synthetic) may be used; however, some performance loss may be noticed. For additional information, see the following section.
( “ENGINE OIL AND OIL FILTER RECOMMENDATION” page 9-5)"
"Using an engine oil other than that
specified could adversely affect the
engine. See the 2011 NISSAN GT-R
Warranty Information Booklet for details
and exclusions."
This was never true for the Z so any oil can be used.