I have done the camper frame before on our last camper and planing on doing T310SR, maybe yet this year. This is the materials I will use on the T310
After sanding, wire brushing and grinding... I start with Eastwood rust converter to stop the rusting action. This product Eastwood Rust Converter | Rust Converters | Auto Rust Converter
Then there is rust encapsulation. Eastwood Black Rust Encapsulator - Paint Over Rust
And then, Rustoleum Pro oil based enamel.
Professional High Performance Protective Enamel Product Page
Yes, it is a long process. But after all that prep work, you do not want rust bleeding back through again.
Here are pic's of when I did our prior T2499. This was only the Rustoleum paint. The rust did not advance as much then
Ideally get the camper up off the ground on stands. These low riding campers are a "project" getting under then. And yours is lower then our T2499 was.
Hope this helps
Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC
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