Glyceryl gives the same bonus to both diesel and coal cells, so it doesn't matter which one you use, although the higher initial burn value for diesel means you will use a lot less glyceryl overall for the same end EU.
Diesel input: 4x 384k EU potential = 1536
Diesel output: 5x 400k EU potential = 2000 (12 seconds processing time)
464k EU profit minus 8k processing = 456k
Coalfuel input: 4x 16k EU potential: 64
Coalfuel output: 5x 48k EU potential: 240
176k EU profit minus 8k processing = 168k
Per individual can of Glyceryl, Diesel is better, and by 2.7 times as much. Glyceryl is the rare / hard to produce item, not the fuel. If I hadn't been processing ender pearls for berylium, I wouldn't have bothered.[DOUBLEPOST=1367282182][/DOUBLEPOST]
While were in a thread about the only true fuel, where do you guys get your nitrogen?
Personally, Ive been cheating using the tome of alkahest to turn redstone into soulsand, which I centrifuge to get KNO3, then I electrolyze it to get nitrogen, and pump the K into a tank, where it can sit in shame for being relatively useless.
As I posted above, Ender Eyes.
Also the potassium isn't useless, along with sodium it makes cheap(er) cooling cells, which means cheap(er) overclockers.