W found this article.
Makes some interesting points but misses one thing which is that a DW NEEDS the stuff on the plates to act as a slight abrasive to ensure it can do its job.
The Frog couple who are coming to stay, the bloke always rinses stuff so much his wife once emptied it thinking it had done a cycle!
We never rinse, never have done. All we do is scrape excess fat off.
The top reasons for pre-rinsing include not wanting to clog the dishwasher, and to avoid the machine smelling - but over half believe rinsing is pointless
www.mirror.co.uk