the chain is still behaves great, no new wax, close to 1000k now. perfect!
Not wanting to sound like a rabid ZFC fan, but this bit is perhaps relevant:
I recommend approx. every 300km for normal road conditions and approx. 6 to 8 hours off road.
You can re wax with much longer intervals, however up to 300km is a wax treatments real low friction zone. From 300km to 500/600km the friction will slowly start to increase to approach that of good drip lubes, and with a corresponding increase in wear.
On the other side of the equation, for “X” km after each re-wax, all internal parts of chain are sliding on solid slippery wax basically leaving chain metal out of it. Re-wax very frequently and wear rates are extraordinarily low. Almost unmeasurably low as most customers change bikes before wear out chain!
If continually pushing re-waxes to circa 500 to 600km, you can expect a quality chain to last circa 8000 to 10,000km to 0.5% wear mark. Re waxing at recommended approx. 300km, the average is around 15,000km. Re wax more frequently, 20,000 / 25,000km plus has been attained. And remember, that is to 0.5
OTOH, Silca had endurance chips that can double the expected life of immersion wax. So... YMMV
