I'm looking for the same info as well. Man can the get expesive.........
Gravity feed is illegal and not DOT approved.I've hunted the internet for tanks there are a few. A local truck accessories shop reccommended a tank built by RDS. They are a large tank manufacturer especially for the boating industry. They supply tanks to Northern tool and they recommend just using the gravity feed. I spoke with them on the phone and they told me that they have sold "thousands of them".
Transferflow (www.transferflow.com), who make replacement tanks and who advertise in all of the truck and RV magazines, say that gravity feed is not DOT approved and is in fact illegal.
American Tank (www.auxtank.com) makes a tank very similar to RDS, but they also do not use gravity feed. Their tank comes with an installation kit and instructions where you tie into the supply and return lines. They anf Transferflow are a lot more money. The installation kit from Transferflow is $285. The tank built by RDS and sold by Northen tool is $550.
I'm looking at the Tool box/Tank combo.
I can probably install it myself, but when you get to be 65+ you just don't want to bother. Did I help at all?????
Only if you don't get caught! I don't know about where you're from, but in OK, DOT doesn't ever mess with pickups.Gravity feed is illegal and not DOT approved.