Nissan's service schedule says 7500 miles. Look in your owners manual. I would only use synthetic oil for 7500 miles changes intervals. If you change oil more often, like 3750 miles, then just about any oil will work fine.
7500 miles is nothing for a synthetic. As you pointed out, you don't have to follow Schedule 1 to maintain the warranty. If you want to change your oil more often, go right ahead, but synthetic oil is a waste of money then.gksmith said:3750 or 7500 miles - it depends on the schedule. My 2008 manual reads:
PREMIUM MAINTENANCE* (Every 3,750 miles or 3 months, whichever comes first)
Premium Maintenance is a Nissanrecommended option that is suitable for all driving habits and local conditions. Nissan developed Premium Maintenance for owners who ant the ultimate in preventative aintenance. With Premium Maintenance, more maintenance items are regularly checked or replaced than with either Schedule 1 or Schedule 2 maintenance schedules.
Using the Premium Maintenance schedule may optimize the performance, reliability, and resale value of your vehicle.
Depending on your driving habits and local conditions, you should follow one of the three maintenance schedules listed below. Use these guidelines to determine which maintenance schedule to use:
SCHEDULE 1 (Every 3,750 miles or 3 months, whichever comes first)
Schedule 1 features the same 3,750-mile service intervals as Premium
Maintenance; however, with Schedule 1 fewer maintenance items are regularly checked or replaced than with the Premium Maintenance schedule.
Use Schedule 1 if you primarily operate your vehicle under any of these conditions:
SCHEDULE 2 (Every 7,500 miles or 6 months, whichever comes first)
- Repeated short trips of less than 5 miles in normal temperatures or less than 10 miles in freezing temperatures
- Stop-and-go traffic in hot weather or low-speed driving for long distances
- Driving in dusty conditions or on rough, muddy, or salt-spread roads
- Towing a trailer, or using a camper or car-top carrier
Schedule 2 features 7,500-mile service intervals; with Schedule 2 fewer maintenance items are regularly checked or replaced than with Schedule 1.
Generally, Schedule 2 applies only to highway driving in temperate
conditions. Use Schedule 2 only if you primarily operate your vehicle under conditions other than those listed in Schedule 1.
* Premium Maintenance is a Nissan-recommended option; however, owners need not perform such maintenance in order to maintain the warranties
which come with their Nissan. Premium Maintenance may not be available outside the United States, please inquire of your dealer.
Schedule 1 describes my situation very well. Both the dealer and Nissan Customer Service made a point to indicate Schedule 1 should be followed. My Honda and Toyota have similar schedules and I know the Toyota schedule changed once we moved from Texas.