Fuel Economy Scams

That be true. A 2% blend of biodiesel will raise lubricity in fuel to pre-ULSD levels. Much of what is being sold at most pumps is 5% or more nowadays. That brings lubricity up to even pre-LSD days of the 90's. All for the same price at the pump as regular diesel. Not a bad bargain to some extent. But, bio is not without some issues on it's own also. It is not perfect. Depending on situation, it can also lead to fuel dilution in the engine oil. That is because it has a higher flash point than regular diesel. There is always some traces of fuel that blow by the rings and get in the oil. Regular diesel, most of the fuel vaporizes in the heat and gets vented out. Bio does not tend to vaporize so easily and can collect in the engine oil over time. That is yet another reason to do regular used oil sample testing as part of your maintenance program to see if it is an issue worth watching. I operate primarily where bio is just about the only fuel option. I have noticed an up tick in fuel dilution. Not critical, but noticable.

To the idea of throwing used engine oil into your fuel tank, on todays engines, that would be a very costly mistake to make. Injector tolerances, especially since OEM's are moving towards common rail injection, will not allow for the contaminates in used engine oil. You could mess up some pretty delicate components. Maybe Uncle Bob did this to his Big Cam Cummins, but not a very good move today unless you are independently wealthy and looking for another business deduction.

 

Not hardly. I run a ported/polished/coated manifold and a blanket on my turbo along with other high flow stuff on the exhaust, and have for several years, and my EGT's run a lot lower than if I was running pure OEM. While the blanket may prevent cooling, it is not allowing for cooking the turbo either. As was mentioned, keeping the exhaust from cooling from the head to the tail pipe makes for higher flowing exhaust. When the exhaust flows faster, it also does not create as much back pressure that in turn generates higher EGT's at the manifold. Thus the EGT's stay at a desirable level, even on a very hard pull on a very warm day. My EGT's hardly ever see anything above 900F on the hardest pulls, unless I mess up and let my RPM's drop more than I should.

 

I used the air cell and thought I had better throttle response...didn't notice any huge fuel mileage gains... but I have so many variables it's hard to say..I can't really say it didn't work..I took it off and on several times and it was inconclusive on mileage but definitely tell a small throttle response difference