Has anyone had any experence witht he Air Dog filteration system? Is intrained air a problem with diesels?

I've looked at them several times, and if they weren't so pricey I would have one. Caterpillar and I believe Cummins as well have Special Service Bulletins that address entrained air in the fuel system.

Considering the size of the fuel bowl on a 6.5 I would assume air would seperate out there and require periodic bleeding at the bleed valve. What am I missing here?

The entrained air they are talking about is not visible air...


Caterpillar Special Bulletin 651-1250:
“Normally, #2 Diesel Fuel contains about 10% air in
solution, although the air is not visible.”


Cummins Service Topic 5-135:
“The source of the vapor is the fuel itself.”


http://www.ekstamworldwide.com/fpoverview.htm

But their injection systems run at much higher pressure don't they?

well that depends on which particual system your talking about, but I guess in general, yes nozzle opening pressures are higher on unit injector systems. All they're saying is that there is 10% air present in diesel fuel, so a fuel preporator would remove the air theoretically giving you ~10% more fuel in the same volume.

Don't use it but the following thread provides some detailed info:


http://www.turbodieselregister.com/forums/showthread.php?t=108378