Changed the filters and used a can of Koolit - got rid of the awful smell.
But what a pain. Observations:
- Couldn’t figure out how to disconnect speaker wire, which made getting new filters in harder
- I used purolator filters, which are made in Germany and seem very similar to Tesla if not same
- The old filters did not smell and looked pretty clean, but I changed them anyway
Since my filter seemed fine, maybe next time I will run the koolit tube up from the drain hole, as recommended on the box. But someone earlier in the thread mentioned this is not really a drain tube, just an opening into the under-chassis. Anyone have more info?