Have been using lighter fluid since Wild Willy was a fresh youngster (1982!).
Works well as a degreaser, but it don't really do anything for the comm...?
If you don't like buying little "Zippo" branded cans
, just go to supermarket and buy Shellite petroleum spirit. Same stuff just in 1L bottles for $3. They use it for camping stoves and the like, camping stores also sell it... but for $5.
Get the bottle and stick a pressure-sprayer onto it, I use it like that to clean the nitro cars after running. Works great if you ignore the cost, might use more than 1/2 the bottle for each car.
If you're looking for a replacement Motor Spray, just find electronics contact cleaner in a aerosol can. However most brands are either in a smaller can or cost more... these days I use Motor Spray for applications where I used to use contact cleaner before!!