can it be used over surface rust ?

Yes! But it’s probably better to wire brush as much rust off if possible. It will stop rust from forming more. I’ve sprayed 4 vehicles with it

can you please tell me what air gun will work best with this product i would like to buy this in bulk

Any undercoat gun will work. Use a regulator to fine tune the air pressure

What are the air compressor requirements (e.g Gallons, psi, sfcm) to undercoat a mid size sedan? Will be using woolwax sprayer.

70-90 psi no smaller than 3gallon compressor tank. The smaller the compressor harder the it’ll work to keep up. Hope this helps.

Can this be used on aluminum trailers?

You can apply the surface shield to any surface including aluminum. It's a lanolin based product.

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🛠️ Protect your metal like a pro—rust doesn’t stand a chance!

SMOOTH OPERATOR - Leaves a thin lubricating layer that keeps tools and machinery running effortlessly.
BULK RUST DEFENSE - 1-gallon size delivers extensive, long-lasting corrosion protection for all your metal gear.
VERSATILE APPLICATION - Perfect for automotive, marine, shop, and home use—apply easily with brush, roller, or sprayer.
LANOLIN POWERED SHIELD - Gentle yet powerful lanolin-based formula repels moisture without harming rubber, plastic, or wiring.
GARAGE FRIENDLY FORMULA - Mild cedar scent and drip-free coverage make maintenance a clean, odor-free experience.

B’Laster Surface Shield Anti Rust is a professional-grade, lanolin-based rust prevention spray in a convenient 1-gallon size. It creates a durable, moisture-blocking barrier that protects metal tools, equipment, and moving parts from corrosion while smoothing operation with a lubricating layer. Safe for use around rubber, plastic, and wiring, it offers easy, drip-free application and a mild cedar scent, making it ideal for automotive, marine, and home maintenance projects.

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Manufacturer	B'laster
Brand	Blaster
Model	128-SS
Item Weight	8.71 pounds
Package Dimensions	8.7 x 8.43 x 7.44 inches
Item model number	128-SS
Manufacturer Part Number	128-SS

Automotive B'laster 128-SS Surface Shield Bulk 1-Gal Pail, Multi

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