Trans/Rear Diff oil recommendations...

ChrisSlicks

The Nissan recommended maintenance schedule is as follows:

Oil and filter - every 3750 miles
Diff oil - every 30,000 miles
ATF fluid - every 30,000 miles
MT fluid - every 30,000 miles
Coolant flush - every 30,000 miles
Replace drive belts - every 30,000 miles
Spark plugs - 105,000 miles

Obviously you have to use some common sense. If you drive your car hard constantly then you are going to have to shorten the intervals especially the oils. If you drive like an old lady with 90% highway then you can double the intervals (except spark plugs), and according to Nissan not have to change the fluid in the AT at all.

I can't recommend Royal Purple in the transmission and diff, yes it has shown to increase power delivery by a small amount but it has also shown to increase wear at the same time. It is popular with racers as they don't care about wear, most of their parts fail due to abuse before wear is even an issue. Just remember that what you saw on TV was probably paid to be there.

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