850cmndo
VIP MEMBER
- Joined
- Dec 9, 2009
- Messages
- 648
So, I've been fighting with this dirty roadster tank. It sat on the shelf for a few years and I admit to not storing it properly. I've rinsed it out but still get enough junk past in-line fuel filters to foul the carbs. Drained it and found it to be rusty and dirty. What really caught my eye was the bottom. Whatever has settled there looks like a black membrane, for lack of a better term. I poke it with a long screwdriver and it doesn't disturb it. It's a one owner and I've never made an attempt to line it so it has to be from old fuel. My question is, how caustic is the prep solution used in the Caswell lining kit? Does it eat everything in site? I'm resigned to the fact that I need to treat this thing but want to know if I need to do something drastic to clean it. I'd hate to dip it in acid as the tank itself is sound and the paint is fine. I figure someone out there has seen this sort of thing, or worse. Thanks in advance.