My parents just got a new 2012 Infiniti G37 Sedan. The factory service manual (well, the 2010 FSM which is the newest I can find) states that the fluid is lifetime fill. There is no dipstick. I found a TSB specifying that to check the fluid, an overflow plug must be removed and a steady stream of fluid must looked for to verify fluid level, and replaced with a new plug after it is removed. An "essential service tool" is used at another plug on the other side of the transmission pan to refill. Anyway, I digress.
The transmission takes Nissan Matic-S fluid and the FSM claims lifetime fill. Since there is no dipstick and I don't have the proper tool, I would be unable to perform a cooler line fluid exchange. Should I just let it be, or have the dealer perform a fluid exchange at 30k miles or thereabouts to evacuate all the break-in wear and manufacturing crud? I will not be installing a Magnefine due to warranty concerns; perhaps after warranty is gone on both the transmission and power steering return lines.
As for the rear differential and power steering fluid, I plan to change the differential fluid at 15k with Amsoil SVG 75W-90, and then every 50k thereafter. Or would changes at 30k intervals be a wiser choice? I will siphon & fill the power steering fluid every oil change (3,750 miles) up through 15k miles to help evacuate break-in wear. I'll probably use Amsoil ATL since the FSM suggests Nissan PSF or Dexron VI as a replacement. Brake fluid flush will be performed every 2 years, and coolant flush will be done at the dealer at specified intervals.
The transmission takes Nissan Matic-S fluid and the FSM claims lifetime fill. Since there is no dipstick and I don't have the proper tool, I would be unable to perform a cooler line fluid exchange. Should I just let it be, or have the dealer perform a fluid exchange at 30k miles or thereabouts to evacuate all the break-in wear and manufacturing crud? I will not be installing a Magnefine due to warranty concerns; perhaps after warranty is gone on both the transmission and power steering return lines.
As for the rear differential and power steering fluid, I plan to change the differential fluid at 15k with Amsoil SVG 75W-90, and then every 50k thereafter. Or would changes at 30k intervals be a wiser choice? I will siphon & fill the power steering fluid every oil change (3,750 miles) up through 15k miles to help evacuate break-in wear. I'll probably use Amsoil ATL since the FSM suggests Nissan PSF or Dexron VI as a replacement. Brake fluid flush will be performed every 2 years, and coolant flush will be done at the dealer at specified intervals.