Your recipie formula is off.

3lbs of KOH into 25 gallons of methanol may, or may not be enough to make quality biodiesel.

You should not follow that formula as there is a VERY good chance you could damage your engines fuel system.

The ABSOLUTE minimum KOH required to barely scrape into astm standards is 7 grams per liter KOH (adjusted for purity)
Most people get KOH at 90% purity so you would have to adjust for this .. 7 divided by .9 means you need 7.8 grams of KOH minimum.

Remember, that 7 grams base is the absolute minimum needed.

I hate it when I see people following these backyard recipies for making biodiesel.. Then, when thier injector pumps goes bad, they blame the biodiesel and post their unfortunate experience for all to read..It makes people think biodiesel is bad for your engine or at the very least is a risk when in fact the person didnt make the stuff correctly.

Please do it correctly.

While this forum is a great place for ford trucks, this forum IS NOT the major hangout spot for biodieseler's.. To find correct information, please visit
www.biodiesel.infopop.cc

You can also find PROPER titration instructions here:
http://www.murphysmachines.com/how_to/how_to_titrate.html