Hello, fellow Pyrex people!
This Golden Hearts has nothing to do with this post--I just wanted to add visual spice to my question.
For the longest time, I had amazing success with Barkeeper's Friend for all the silverware marks and cooked-on grossness on my thrifted Pyrex. However, the last few pieces I've cleaned seem to have lost some of their shine as a result. Thankfully, they were all dirt-cheap and sort of risky buys since they were so coated in grime, but still...now I'm paranoid to clean ANYTHING. I've read about people getting great results from soaking in hot water and soap, but soaking by itself has never worked for me for the super baked-on crud. So if you have any tips that don't include soaking (unless you're using some kind of magical soap), please share!