I've stripped out everything on the rear end now, and whilst it's being powdercoating I want to underseal the lot.
I've read several threads on here saying use this, do it this way or that. So i thought i's ask again for a fresh opinion.
My original idea was to scrub whe lot like a wire wheel, paint it with Hammerite smooth, and then go over this with a proper underseal such as Tetrasyl or waxoyl.
But having read a bit, it seemes the Hammerite with Waxoyl sounds like that rolled into one. Is it worth going over the lot with a stoneguard first and then over it with the H/WO?