1) Preetty much figure my detergent contains this, otherwise I hope the lack of is my washer's only antagonist!
2) Prefer warm washes, cold for my own clothes, which is all I wash in cold; hot seldom used, but then again, my daughter's guinea pig linen, maybe I should turn her on to using...
3) Don't use--surprisingly my near-top-of-the-line Kenmore lacks a dispenser for, though I have a bleach dispenser, that went from seldom-used, to bleach never needing to be just poured directly in...
4) That machine gets the filthiest loads done with just one wash...
So, pretty certain erosion is likely to happen even using plain water, only keeping a washer unused for those many years those vintage New In Box opened after fifty or more years is how to get your vintage machine off to a good start, with regular maintenance...
-- Dave