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Automotive Primer 2 in 1 Filler and Sandable Flat Gray Oil-based Spray primer ( NET WT. 12.0-oz )

Ratings & Reviews for Rust-Oleum Automotive Primer 2 in 1 Filler and Sandable Flat Gray Oil-based Spray primer ( NET WT. 12.0-oz )

4.6
148
Review
 4.6 out of 5
148 Reviews


92% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise this primer for exceptional sandability, fast drying, and versatile adhesion. Most highlight how smoothly it sands without gumming paper, dries in minutes, and bonds reliably to plastic, metal, and challenging surfaces. Many report one-coat coverage that hides imperfections and fills print lines effectively. Users across automotive, woodworking, and 3D printing projects call it a must-have, 2-in-1 solution delivering professional results. A few experienced spray nozzle clogging, though product performance remains consistently strong overall.

Customer review summary generated by AI, including incentivized reviews.
148 Customer Reviews

Great Coverage and Easy to Sand!

Would Recommend

I was very impressed with this Rust-Oleum Automotive 2-in-1 Filler & Sandable Primer. It sprays evenly, provides excellent coverage, and does a great job filling in minor imperfections before painting. The flat gray finish makes it easy to see areas that still need attention, and it sands down smoothly for a clean, professional-looking surface. The spray pattern was consistent, and I didn't experience any issues with clogging or uneven application. It adheres well and builds nicely with multipl...

September 1, 2026
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easy to use looks good.

Would Recommend

lays on smooth and is easy to sand.

August 27, 2026
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It’s Primer

Would Recommend

Coats well and sands easily.

June 21, 2026
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Easy to use

Would Recommend

The product was easy to spray and fast drying.

June 19, 2026
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Perfect for the Job

Would Recommend

Great at what it does, super easy to sand and overall work with.

May 27, 2026
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Great product

Would Recommend

Lays great.

May 25, 2026
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Great coverage and fills well

Would Recommend

Works great

May 22, 2026
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It’s primer

Would Recommend

Great product covered what I needed

May 14, 2026
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Keep your receipt

Would Recommend

Keep your receipt. I had one clog and Lowe's will not exchange over 90 days without a receipt

May 8, 2026
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Response from Rust-OleumSupport

That is certainly not how we expect Rust-Oleum Automotive 2-in-1 Filler and Sandable Primer to perform. If the valve clogs, twist and pull off the sp...

Rust-OleumSupportMay 11, 2026

Rustoleum

Works for 3d prints

Would Recommend

Works great for getting a smooth finish on 3d prints

April 23, 2026
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Above

Would Recommend

Works great even to make silicone caulk paintable

April 23, 2026
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Good

Would Recommend

Spays very good but not as thick as you woukd think a filler primer would be

April 21, 2026
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Great for car tag restoration

Would Recommend

Easy to use

April 16, 2026
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