Yes, I'm a renter. And this HE washer being delivered is new. Of course, I do worry about damaging the washer if using regular detergent is an issue. Hence the question posted. I wasn't sure if HE detergent was just an idiot-proof way of using less regular detergent and sold as a "must-have" product by companies. But if there's any chance regular detergent would damage HE washers, I will definitely switch to the HE detergent. When I found out vinegar was hard on my dishwasher, I stopped using it immediately. I've been in my rental for over 8 years, I may not own the place, but I'm invested in keeping it in good shape and maintaining a cordial relationship with the owner/company.
Thanks all.