austingta wrote:
dennych1 wrote:
I am looking to install a 60 gallon RDS gravity tank in back of my 2015 chevy 3500HD dually. Looking for some answers before purchasing.
1) can you fill your main tank as you drive
2) will it stop filling when main tank full automatically
3) does truck have a problem when fuel gauge always reads full until RDS tank is empty.
4) Do I add a fuel filter and water seperator(any suggestions.)
Thanks for the help
DEnnis
My results are a little different.
My 12VDC normally closed isolation valve seems to have malfunctioned and now it lets diesel flow into the main tank until it's overfull without power to it or the small fuel pump I have installed. I can see diesel in the filler neck. Nothing actually overflows or leaks out, so that's a plus.
However, my chech engine light is on and my fuel gauge and all DTE calculations are at LOW and low fuel lights are on.
It is clearly caused by this overfill situation. I have now turned off the manual ball valve at the tank and will report back after I burn some fuel. Hopefully, it will reset itself.
Anyone else have problems after staying full too long?
There is no electrical connection if you use the RDS gravity flow install kit. My gravity flow RDS tank has worked perfectly since new. There is a check valve at the intersection where the aux tank line meets the OEM fuel line. The check valve closes when it senses the OEM tank is full and fuel has backed up the OEM line and contacts the valve. Simple is good.
I do not usually run with my aux tank open. I like to just refill the main when it gets down to about 1/4 tank, if I still have more driving to do that day.