Compression Ignition Addict
Join Date: Sep 2006
Location: Neh Yoak
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[QUOTE=NMRAcer;2704477 There is a check valve in each of the diesel banjos so no oil can enter the diesel lines[/QUOTE]
Sounds like you have at least put some time and thought into this, and then asking questions. That right there is a 90% of the battle. With that said, I hope you have aftermarket check valves installed in the Diesel lines. The Factory Banjo Bolt Check valves are not true check valves and will allow WVO back into your Diesel system.
Next thing is like Ridiculous said, You probably should have a heater in your primary tank. The 8gallon heat tank sounds good, and I see what you are saying about circulation heating up the big tank, but if you can't get the cold oil out of the big tank to begin with, not much circulation going to happen. Honestly, for the money spent on two tanks and the plumbing, you might have been better off ordering a basic heated tank from BFT.
However so long as it is warm out, you won't have too many problems, but I design towards worst case scenario. Weather is unpredictable these days, What if you move? What if you go on a road trip where it actually gets cold?
Coolant: Two schools of thought on this, I prefer to share myself. The 6.0 has a coolant shutoff valve, so if you plumb a series system, anytime you shut off your heater, you will lose coolant to everything. If you go Paralell(shared) you can easily bypass the valve so you still have coolant for the WVO system, even if the cab doesn't. But is this case you "may" need a coolant circulation pump for maximum effectiveness. For this you would tap into one heater hose on the passenger side between the shut off valve and the firewall, then the other hose would be tied in with the coolant return hose on the drivers side under the coolant reservoir.