08-10-2016, 02:11 PM
I did the shake and coat thing on my 81 XJ650. I bought the POR 15 kit and filled the tank with the solvent, chains, gravel, and warm water and shook it for about 15 mins. It actually got it really clean inside. The POR 15 lasted for 6 years (at which point the bike was dead) with no problems at all.
The CB tank does look like it's costed (or more likely plated or electrocoated) with something. I've never seen a spec of rust anywhere inside it.
The CB tank does look like it's costed (or more likely plated or electrocoated) with something. I've never seen a spec of rust anywhere inside it.