Those cars should clean up nicely with the hair dryer. However, I have never seen so much of the white stuff before. Waiting to see how they come out. Good luck.
I once bought a small collection that had the white stuff on several of the cars but no where near what you have.
Got 2 NIB Lionel/Flyer cars to roll behind one of my NYC Hudsons.
These are the 2 cars I cancelled the sale because seller would not
combine shipping cost. He had a change of heart and I paid for
them. They are new never ran. One is a NYC bay window caboose,
it was 10.00. The other is a NYC 3 dome tanker car. It was 15.00.
Happy with them.
Man, I missed some deals this week. One seller had at least 10 nice cars for sale.
All at 4.95 start price. Many sold for start price. One I wanted was a 5 digit tie car.
Nice car and it went for 4.95. I forgot about the auctions. LOL, but saved some money.
I picked these up at an auction a few weeks ago. Only AF items that were priced reasonably, because of their appearance I assume. I said I would share the results of 6 kilowatts of hair dryer use, several sheets of Kleenex, and 4 cotton swabs.
Some of the boxes were partially coated on the inside with the white stuff also.
Just kidding, but for reference it was a 1500 watt hairdryer clamped to medicine cabinet door so I had both hands available. Took about 10 minutes each. The low setting required holding the car too long in one spot. The higher setting started softening the white stuff much faster so I just kept moving the car and wiping.