There are several sites about "naval stores" but CK might get upset if I posted the URLs. Naval stores included a fairly wide spectrum of products made by destructive distillation of pine wood including stumps that were absolutely essential to wooden sailing ships. But none of the sites even mentioned use as wagon wheel lubricant, which surprised me.
The sites about "tar kilns" reminded me of a street by that name in outskirts of New Bedford, which used to puzzle me.
Natives of North Carolina were called "Tar-heels" because so many were employed in that business.

The word "kiln" reminds me that the old timers never pronounced the "n", although my dictionary's second pronunciation does. I did not know before that the word was derived from Latin.

iln kil, kiln
n.
ME kylne OE cylne L culina, cookstove, kitchen6 a furnace or oven for drying, burning, or baking something, as bricks, grain, or pottery