Review on 🖨️ Do it Wiser Replacement Toner Cartridge Set (4-Pack) - Compatible with Oki MC362w C531dn MC361 C330dn C331dn MC351dn C310dn C330 C530dn MC561 C510dn C511dn C312dn MC361dn MC352dn MC362dn MC562dn by Doug Taylor

I have used several different toner cartridges after the sale. All cartridges were replaced last week. I would estimate that they will all be around 80-90% levels. Less than 100 cyan pages are 10%. I've never run out of toner so quickly. Let's see what the support says. You cannot replace one of the cartridges. You will only return one cartridge or all 4. So you need to order a replacement.