Hello, I am going to treat the underside of my L322 with Dinitrol in a couple of weeks.

RC900 rust converter, cavity wax, and 4010.

I will get it up on axle stands, and take the wheel arche plastics out. There looked like a fair few heat shields underneath, which potentially would need taking off.

Does anyone have any other tips for applying? Anyone used the Dinitrol spray diagrams? (they are £20, not parted with the cash yet!)