Originally Posted by Speedy

Interesting thread. Since I just got my Z so I'll definitely keep my eye on the oil level. Anyone got a link to the TSB? If it was posted sorry I missed it.

I haven't had mine long enough to do the first oil change, but I do all my own work. I'm OCD so I keep all my receipts from oil changes as well as a maintenance log book in the car (helps with resale).

I see a lot of misconceptions in this thread as well revolving around warranty. Dealerships CAN NOT void your warranty for doing the work yourself unless they can prove you caused the problem. There are laws against this. The only way a dealer could have such a policy is if they provide free oil changes to their customers.

It's the same reason they can't force you to use their oil or filter.

To the OP, it wasn't the Mobil1 that was the issue. If you burned 5qts in 5,000 miles there was something major wrong going on.

Maybe these cars need a 5W40 or 10W40 weight oil.