My Kindermann SS only takes 1 litre of chemisty and 4 rolls of 35mm film at once. I have developed this way numerous times with ID11, Perceptol and Microphen all at 1+1 with success and repeatability.
I came to the dilution of 1+3 because i was experimienting. Also my water tap temp, which i was not checking at one point. I thought if it was warmer i could shave off a couple minutes depending on temp. which i wouldn't have to calculate exactly because of high dilution (laziness). When i began to control temp (68 deg.), i just kept the dilution. Also, i read good things about 1+3 dilution. When i began to check my process, i came across minimum developer necessary which i was not meeting. Reason for dilution may be for O/U mentioned below or affecting grain/contrast, i personally liked my results, and for the sake of some sort of consistency kept the dilution.
I also noted as i keep looking through apug history that what i'm actually doing is Overexposing + Underdeveloping, which i apparently like, as my scenes for the most part tend to be high contrast. This is why my 100ml is probably not developing my negatives completely and retaining highlights. IF you look up Overexposing + Underdeveloping you'll get lots of hits here on apug. And if you look up d76 1+3 you'll also get several hits. Most O/U threads don't mention exhausting developer through high dilutions, but 1+3 threads caution against possible exhaustion if not enough developer is used. I didn't realize what i was doing, but now everything is pretty clear.
You can develop one 135-3 roll (80 square inches) in 473 mL (16 ounces) or two rolls together in 946 mL (one quart) of diluted developer. If you process one
135-36 roll in a 237 mL (8-ounce) tank or two 135-36 rolls in a 473 mL (16-ounce) tank, increase the development time by 10 percent (see the following tables).
Several people have noted that the REASON for minimum developer noted is for high key scenes, where say 100ml (as i use) tend to not be enough to give clean whites, etc. So while it might be enough for many occasions, it might not always fit the bill.
Thanks to everyone. I don't know if i missed something else.
just realized someone already referenced the kodak datasheet... as i went to breakfast, and came back to finish my reply... sorry pdeeh.
It may be that your preferences in photography factor in as well - wandering through your APUG gallery uploads I note very few images that I would describe as high key or predominantly based on bright highlights.
And of course if, like I do, you shoot shorter 35mm rolls (24 exposures is my favourite choice when bulk loading) then that tends to get you back closer to the manufacturer's recommendation.
I am inherently conservative about things like capacity, so I am more likely than some to add extra safety margin rather than count on using as much of the margin as possible.
This is probably part of the reason I use HC-110 in a replenishment regime, and have a selection of sizes of tanks to choose from.
I don't doubt that your experience leads you to an appropriate conclusion for you. I'm just suggesting that it is a good idea to recommend caution to others.