A scan on this thread finds the following posts, in favor of using diesel (in some form) to prevent rust:
By timswi: "That will work to a degree, I used to spray used motor oil under my '70's pickups to mitigate rust."
By LD1: "The farmer down the road uses diesel as well. His equipment always looked good. Even the older tractors.:thumbsup:"
By CTPhil: "I have my local garage spray the underside of my truck in the fall."
By flusher: "I spray the seed cups in my grain drill with diesel every few months. Diesel is waxy and doesn't evaporate rapidly like gasoline."
By D7E: "Pretty standard thing to do anywhere i've lived."
By Scooby074: "It works. I know a farmer that used to spray diesel on his old disk to keep the rust down. And the spreaders get a spray with diesel after being washed out."
By Bear Foot Farm: "A fine MIST will cover a large area with a small quantity, and it stays on the equipment a long time"
By daman1: "I do the same thing but cut it with some clean 20w ND oil,gives a little "thicker" oil coating."
By 90cummins: "Living in the rust belt of Western Mass I have found that WD-40 or its generic equilivant from Wal-Mart and white lithium grease in an aerosol can works well. I spray wd40 on the parts to be protected then the white grease to seal it. The WD-40 penetrates into the cracks and when the white grease is applied it is thinned and wicked into the rust, flaking paint or parting lines of the parts or sheet metal."
By Fixemall: "One cup of diesel will coat a 7' tiller, two bush hogs and a finish mower if applied with an automotive paint gun."
By Mark Page: "My Grandfather did the same thing only he used waste oil. He had a very old drop spreader that only had minimal rust on it. It wasn't 'til I was much older that I understood why."
By Bota4me: "Mix waste oil with diesel, 50/50 then spray on for corrosion resistance. Works great!"
By MikeD74T: "When I worked as a cement finisher we brushed diesel fuel onto the rim, blades, & elevator of our power trowels after each job. Prevented rust and concrete accumulation. I've taken apart 50 year old fasteners that were occasionally sprayed with DF, it will go into places where water won't."
By Verticaltrx: "'Mix waste oil with diesel, 50/50 then spray on for corrosion resistance. Works great!' That is what I use, but it is more like 70% diesel 30% used oil. I put the mix in a little spray bottle with a fine mist setting. Almost zero gets on the ground (actually the concrete floor of my shop,) and we're talking milliliters here. I generally only use this on things that corrode badly like fertilizer spreaders."
I'm sorry but I refuse to believe that all of these folks are wrong.
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