Originally Posted By: mag44
I've been toying with home brew oil spray formulas this year. My current blend is as follows:
1pt. Automatic trans fluid (penetrating agent)
1 "brick" paraffin (Approx. 1X2X4 inches)
1/2 cup roofing tar (to bind the oil)
1 1/2 qt. used 10W30 or whatever is around
I use an old rice cooker to heat it all up to about 230F and mix it well. A shutz gun applies the hot oil like water, and also fogs it nicely.
The mixture gels as it cools and drips little. However I have received a complaint that it smells foul, so I'm looking into either making a "clean" batch for doors and inner quarter panels, or something like essential oils to make the existing stuff smell pretty.
Suggestions are welcome.
Used oil can be nasty stuff. Carcinogens. Teratogens. Dioxins.Dermatitis.
Appreciate that its thrifty but I favour unused oil for this kind of thing. A little goes a long way.
The other potential issues with your recipe are ease of application and penetration, since it sounds pretty thick. Not everyone has a schutz gun handy (or a rice cooker they want to permanently contaminate), but most people can probably get hold of some kind of spray bottle, as per the OP's method.
One issue I've found, even with my thinner recipe, is that it can render sills waterproof, so they can actually fill up, and I have to keep poking the drain holes free.
They don't seem to rust much but I'm slightly concerned that in the rainy season they could breed mosquitoes.