I am looking to undercoat my blazer with old motor oil. What type of gun will I need for this. Can I use a paint spray gun or a texture spray gun from harbor freight? The texture spray gun is $20 and has nozzles up to 8mm. Is it also possible for me to use a garden pump sprayer?? Or will I need to get an undercoat gun? If so where can I get one without having to order on the internet. Thnks.

 

why dont you just get one of the sprayers for fertilizer?

 

DO NOT USE OLD MOTOR OIL
old oil can cause more harm than help
the environmental impact is a whole other topic

proper products can usually be purchased at places like your local Napa
"Less drip" products are not the best IMO , they tend not to creep
This stuff works really well
Fluid Film® | Corrosion Preventative, Lubricant and Rust Inhibitor

Words of wisdom
Spread a layer of sawdust under spray area before spraying , makes clean up much easier
When I sprayed my own vehicles I used a schutz gun

 

I haven't seen anybody spray old oil in years. If you do, a word of advice. Do NOT spray it on rubber components of your suspension like shock bushings, body mounts and such. Oil rots rubber. If you're worried about stopping rust, use some spray undercoating. It stays in place and once it cures, doesn't collect dust.