My 2005 35th aniversary edition is going thru 1 quart of Mobil 1 10W-30 every 400 miles with 47K on the engine. What (if anything) should I do?

 

Well, I'm no expert but after all the comments I've read about oil consumption it seems pretty normal with the VQ....

 

Since you're new I'll be gentle. Search. But since it's your first post...
https://my350z.com/forum/showthread....il+consumption

There's a lot of info about oil consumption.

 

Go see the dealer and demand a new engine! Seriously, that is NOT normal and is outside the TSB that was finally released.

John
PS: and read the consumption thread for help/info

 

As stated above, read the Oil consumption thread stickied at the top of this forum.

The 2005 anniversary editions and the 2006 manual transmission models have the same rev-up engine. There is a TSB that has been released regarding this.

Go to the dealership and tell them your engine is eating oil. Bring them a copy of the TSB, since most dealerships will not have it on file. Request an oil consumption test, which will require them to give you an oil change and "seal" the oil filler cap, oil drain plug, and oil filter. Some will mark the dipstick too but that's not necessary.

Come back to them in 1,000 miles and have them take a reading after letting the car sit for half an hour or more. If it's below the level described in the TSB, you are entitled to a new engine.

 

As long as you're not modded (warranty denial), they should swap your v1 for a v2...