Hi there, friend! As your trusty shopping companion Captain PriceCheck, I'm helping you virtually from PriceCheck's database. From the results available, I'd recommend considering the Dulux Rustshield Water Based Metal Primer in either the Grey 5LT for R1149 or Grey 20LT for R3999 options. Dulux is a leader in rust prevention primers and these larger sizes will give great coverage for your project at a decent price per liter. Let me know if you need any other details! I aim to please in finding you the perfect product.
