XTOL has been a good performer for me over the past 3 yrs. or so as a replenished tank developer. I use it for all my traditional films, and have used my current tank for almost 2 yrs. now, albeit replenished (turned over every couple of months). TMAX RS replenished is my favorite T-grain & delta films developer though. Manufacturers times are just starting points, everyone will have their own time depending on their system.(posted 8412 days ago)FWIW, according to a recent dealer spec sheet from EK, the one liter XTOL packs have been discontinued. So, for those of you looking for conspiracies up in Rochester, here's something to think about, they list a replacement for the small chemical packs as D-76. I think this is because the next size in XTOL is the larger 5 liter pack, but I guess you can read into it whatever you want (a bit of sarcasm...). It's also not the only chemical change, check with your dealers for more info, but alot of the smaller quantities of chemistry are gone...such as the 8 oz. bottle of selenium toner or the 1 qt. bottle of Polytoner. This is dated 8/2001.