09-06-2020, 08:51 PM
I have to say, I've soft soldered (with plumbers solder admittedly) fuel and oil pipes for the last 45 years. Not had a problem yet, despite some high mileages, especially in the early days. It's not that I don't have the wherewithal to silver solder the pipes, just hasn't been necessary. I believe the factory soft soldered them in the day......