I live in FL as well, and I usually go about 4,000 to 4,500 miles between oil changes (off the shelf synthetics). My Z is not a daily driver anymore, so I end up changing every 4 to 6 months now.
I've sent in all but one of my recent oil samples to blackstone labs. They all look great at 4k miles, especially the TBN. Blackstone's comment was:
Quote:
|
Go 6,000 miles on your next fill, unless you're doing a lot of racing.
|
I could go to 6k miles easily but old habits die hard, and 6 months seems like a good time to change the oil anyway. To each his own.