Postby smj999smj » Thu Mar 10, 2016 7:14 am
"Best" is always subjective and everybody has their preference. I have a 2006 LE and a 2008 SE and I can tell you what "I" use:
Engine oil: Walmart's Supertech Full-synthetic 5W30. At $17.50 for a 5 qt. jug, it's tough to beat, price-wise. At one time, it was made by Royal-Shell, the makers of Rotella, but Walmart does change it's suppliers, so it's hard to tell. I did get the oil tested at 150,000 miles at Blackstone Labs and with 7500 miles on the oil sample, the results came back great and they recommended extending the interval to 9200 miles. I've used it for about 7 or 8 years and I've had no issues with it. There are many great oils out there, including Amsoil full-synthetic and Royal Purple and, of course, Mobil One, but they are all a lot more expensive. Also, how much benefit you'll receive compared to conventional oil is debatable. Whatever you choose, make sure it's certified by the American Petroleum Institute (API) or ILSAC.
Automatic transmission fluid and transfer case fluid: I use Valvoline Maxlife ATF. It's fully compatible with Nissan-matic Type "J" and "S" and a fraction of the cost, at $17.50 a gallon jug from Walmart. Nissan-matic "J" is essentially Castrol Transmax Multi-import ATF in a Nissan bottle, so that's another good alternative. Most synthetic ATFs will work fine, but make sure it states it is recommended for use in Nissan-matic "J" or "S" applications.
Front and rear diffs: I use Walmart's Supertech full-synthetic 75W90 gear oil in both of them. If the store doesn't have it in stock, I go with Mobil One full-synthetic 75W90.
Antifreeze: Prestone "all color" will work just fine, but I prefer sticking with genuine Nissan green ATF (which is made by Pentosin) or Pentosin Pentofrost A2 green antifreeze. If you want to switch to the longer-life, Nissan blue antifreeze, it's the same as Pentosin Pentofrost A3 blue antifreeze.