While Zippo lighter fluid (Naphtha) is a bit more expensive per ounce than other solvents (mineral spirits, lacquer thinner, et al), it does usually come packaged in a dispensing container that may make it easier to dispense in a directed method into the internals of typewriters for cleaning them out.

The other benefit is that some may have it on hand for general household use without needing to make a separate trip to the hardware store.

via, but not really directly suggested by https://old.reddit.com/r/typewriters/comments/1g9ntnj/lubricant_reccomendations/

https://www.ebay.com/itm/186572686851<br /> Vintage Remington Touch Oiler Tool 5 1/2" Long Metal Tool

Lube-All Oiler LA124 Triple Pack, 1 oz, 2 oz and 4 oz Bottles with Flexible Spout and In Cap Shut-off Valve<br /> https://crawfordtool.com/products/lube-all-oiler-la124-triple-pack-1-oz-2-oz-and-4-oz-bottles-with-flexible-spout-and-in-cap-shut-off-valve?variant=42824191901937

Bottles that could be useful for dispensing either oil or lacquer thinner/mineral spirits.

Duane of Phoenix Typewriter uses Leak-Proof Lube-all oilers for dispensing lacquer thinner on typewriters.

Lube-All Oiler LA124 Triple Pack, 1 oz, 2 oz and 4 oz Bottles with Flexible Spout and In Cap Shut-off Valve