HaborFreight has 3oz of SuperLube for the same price as: 1.5oz tube from some www slot car sites, or the 0.75oz SCC hypodermic that Kings resells for $7-8. This monster should last most people several seasons and refill 4 or more hypos!
https://www.harborfreight.com/85-gram-super-lube-grease-cartridge-93744.html