Go to a Texaco Oil Products Distributorship, there are plenty in south Texas. Ask for a bit of 140 wt oil. It may be purchased in a container with as much as 32 gallons. Inexpensive, too; like $220.00 for the 32 gallons.

You may find a commercial distribution plant that sells it cheaper if you search the outer areas of "oil-field" towns & cities, Victoria, Beeville, Tx to name a couple.

Nationally, or , make that statewide, Thomas Petroleum has a "smorgasborg" of these products. 'Luck! Fastball