How about 2-3 years between coats? Depending on where you live of course. I recommend a yearly
maintenance coat to be safe.
You can do a search here on "Honey Teak". As I'm sure there have been other comments on it. I live in the
Caribbean and we usually have to re-coat every 6 months to keep regular
varnish up good. And that is with a start up of at least 8 coats if not 12.
2 things that are against this "varnish"
1) Expense....very.
2) Tendency to NOT do a yearly
maintenance coat because it looks so good. If you let this stuff go it's hell to pay striping it off.
You can read more on my blog and see some photos too.
Cheers