For "sturdy" whites (socks, teatowels, dishclothes, pillowcases etc); I always prewash and do a 60*C minimum wash (depending what machine I'm using). In the prewash I always use a liquid detergent (e.g. Ariel green liquid) or a Persil green liquitab, and always 100ml of Persil green powder in the mainwash (I use less detegent in the mainwash than if I would be doing a mainwash only, as there will still be quite a bit of detergent int he load left from the prewash). No softener at all. The cycle I use is:
* Bosch - 60*C+Prewash - Rinse Plus - 1400rpm
* AEG - Energy Saving 67*C - Pre Wash - 1600rpm
* Miele - Cottons Hygiene 75*C, Pre Wash, Intensive, Water Plus - 1600rpm
For more delicate whites (i.e. clothes you wear, the ladies of the house's smalls etc), I always use the 50*C cottons wash on either my AEG or Miele. Before I had both, I had to use the 40*C wash, and whilst that was OK at getting most whites clean it didn't fare well with in-ground dirt. For this load, I use again liquid in the prewash and powder in the mainwash; but usually Fairy liquid in the prewash and Persil Non Bio powder or Fairy Non Bio (tabs or powder) in the mainwash. Cycles I use:
* AEG - Cottons/Linen, Easy Care 50*C - Pre Wash - 1600rpm
* Miele - Cottons Universal 50*C - Pre Wash - Intensive - Water Plus - 1600rpm
I often pour some Ecover percarbonate bleach in with the mainwash detergent too if it's a particularly stubborn soiled load with both sturdy and more delicate white loads.
I have my first load of sturdy whites in the Miele at the moment at 75*C, but the delicate whites load I washed yesterday turned out great. The AEG is also a good machine for white; however sometimes with the Bosch more often than not socks in particular come out dingy, and also some stains in teatowels remain..
FWIW,
* Bedlinen always gets cottons 60*C-75*C (depending which machine I'm using)
* Flanellete sheets and fleecey blankets always get easy care/minimum iron 60*C
* Towels always get 60, 75, or occasionally 90/95*C
* Woollies always get 40*C on the handwash cycle
* Clothes always get Minimum Iron (Miele)/Easy Cares (Bosch)/Fashion (AEG), or, if it's a particular sturdy or heavy soiled load, Cottons 40*C
* Jeans always get Cottons 40*C
That's more or less all the loads I'll wash in a week. I usually do about 30 loads a week - 10 loads of clothes (delicate whites/coloureds/lights/darks etc) or so (sometimes more sometimes less), 5 of "special" clothes e.g. woollies, jeans, 5 loads of towels, and 10 loads of linens (bedlinen, blankets, kitchen linens etc). All this just for a family of 5... I'm glad we have 3 machines (well, 2 plumbed in at the moment)!!!
Take care all,
Jon