I believe I said those ECOs were boring. And I consider boring the utmost compliment for a fix gear chain.

I ride the factory grease until the chain asks for lube (looking dry or beginning to make noise). Lube with TriFlo (my good fix gears) or Finish Line liquid MTB (winter/rain/city fix gear). I never bother to "remove" the factory grease. Edit: I simply wipe the chain clean with a rag while on the bike. Yes, road grit is accelerating the chain wear and stretch. But - with good, sturdy 1/8: chains being used with no offset or sidways flexing, that accelerated wear means the chains still last a long time. At $20-something each, my time and reducing solvent use is worth more than getting that last mile per chain. When the chains reach 1/16" "stretch", they get put away and a new one put on.

Someday my cogs and rings will all be too tired for new chains. I do periodically replace the most used cogs, the 16s and 17s. Then I have a choice. New stuff or keep riding, using those retired 1/16" chains as "new chains for another few thousand miles each. And then I'll die and it will become someone else's problem. I'm 71 now. The journey with the current set of rings and cogs started when I was 59. The two good bikes have 22k and 4k miles. So this is a pretty easy and not very expensive system (to maintain - acquiring the array of cogs between 12 and 24 teeth cost me a sum. All the cogs are EAI except those 23 teeth and larger. EAIs are not cheap but very well l made, last a long time and really resist throwing chains. In sum, those EAIs work so well that why ride anything else?)