aux. fuel tanks

[walkerkd]

has anyone added an aux tank on thier truck yet? i have read something about this but seems like there was something about the obd2 truck. or something like that. i have 50 gallon tanks on my trucks have one i can put on this truck just wanted to know if someone has done this. do the gm truck have a filler tube in the top of the tank like the others? any info i do appreciate.

[pullinpower]

I have been wanting to do this also,transferflow has some nice under the toolbox tanks but their pricey.

[Fastchevys]

Not a transfer tank, but I am having Transfer Flow's 45 Gal. replacement tank installed in my SWB-HD today.  Pricey, but I'd imagine I'll forget all about the cost on my next road trip.

 

I asked Transfer Flow about the OBDII issue since they had it listed on their website.  They are referring to trucks setup for California emissions.  Every vehicle sold in America since 1996 has OBDII.