EGT Readings Diesel vs. WVO
Posted: Sun Jan 09, 2011 9:54 pm
Just for fun I thought I'd share that I've been running grease in my Jetta TDI for about 8k miles so far. I also decided on an exhaust gas temperature gauge instead of a veg oil temp. gauge. I could have done both or like most folks, just do the veg temp. gauge.
My biggest reason for the EGT is that it monitors combustion quality. A vegetable oil temperature gauge is a great tool to have, but there's many dissenting opinions on how hot the oil needs to be pre IP, and it doesn't tell you if that's enough to burn the fuel completely in the combustion chamber.
The EGT gauge tells you how hot your exhaust is on WVO, therefore letting you make comparisons to what it reads when you're on diesel fuel.
The A4 TDIs are known to drop combustion temperatures at idle, so I try not to sit in traffic longer than I have to on WVO, but generally I get the same readings on WVO as I do on diesel. Usually at idle on either fuel, the temps. are anywhere from 300 to 400 degrees. Highway or intown driving gets the same readings also.
Anyone else using one of these? It's really cool to be able to make comparisons.
My biggest reason for the EGT is that it monitors combustion quality. A vegetable oil temperature gauge is a great tool to have, but there's many dissenting opinions on how hot the oil needs to be pre IP, and it doesn't tell you if that's enough to burn the fuel completely in the combustion chamber.
The EGT gauge tells you how hot your exhaust is on WVO, therefore letting you make comparisons to what it reads when you're on diesel fuel.
The A4 TDIs are known to drop combustion temperatures at idle, so I try not to sit in traffic longer than I have to on WVO, but generally I get the same readings on WVO as I do on diesel. Usually at idle on either fuel, the temps. are anywhere from 300 to 400 degrees. Highway or intown driving gets the same readings also.
Anyone else using one of these? It's really cool to be able to make comparisons.