I've been advised by more than one old farmer to use lindseed oil (due to it's readily polymerization) through a paint gun (the pressure will also likely hasten polymerization as well), and then "drive down the dustiest road you can find!". (Just make sure you spray a bit of acetone through the same gun, apparenly.) Years ago a shade-tree guy in NH said they used to just use motor oil 'til a couple of years ago when the someone gave them a hard time. These were all rust belt states. (I can certainly attest to the polymerization properties of pure tung oil with wood; but good luck covering your car with it...$$$)

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72% 1992 FJ80 + 17% 1983 OM617 + 10% 85/87/92 4Runner + *Eclipse/GMC = 100% Truck
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Build Thread: http://forum.ih8mud.com/threads/a-humble-fj80-om617-r151f-swap.759554/