Lighter fluid made the tires soft and the engines run faster man I need to find a track again
I wish you great success in fixing your freewheel
I cleaned up a gritty grinding rusty 7sp hub today I warmed the hub up in the solar oven then I used automotive brake cleaner, this is very smelly stuff and dangerous use outside on a windy day... spinning the hub until is is free, no more rust comes out and feels smooth... then after the brake cleaner immediately lube afterwards with triflow to clean out the brake cleaner spinning the hub until is is free and clean not gritty... and making sure all particulate matter is out of the hub then I use 10w30 to relube the hub. This has worked for me on several old hubs even a helicomatic.