PaulG,
1) what was the cost to do it and was it worth it?
You can burn biodiesel blended or 100% without doing any mods to your truck. You can go back and forth, mixing any amounts of bio with petro. Interesting to note, adding 5% bio to petroleum diesel increases the fuel lubricity by about 60%. Also interesting, is that Rudolph Diesel invented the diesel engine to run on vegetable based oil! He was running peanut oil at the 1900 World's Fair. Rudolph Diesel was a visionary who saw a future with farmers growing their own fuels locally. Pretty cool. Back in the early part of the 1900's, petroleum was dirt cheap (literally) and so that is what the industry ended up going with-- but in today's world,... well... hmmm.
2) will our stock pump handle it?
My understanding is that it will-- but I put in a FASS when I started burning bio (see below).
3) i live in CT how would the cold temp effect the oil?
Commercial biodiesel gets seasonal, winter additives just like petro-- but check with your retailer for specifics. Here's a link to U. S. retailers:
U. S. biodiesel retailers
4) where did you put the extra tank.
Don't need one. Mix bio with petro in any amount you want.
5) how hard was it to install eveything and do you regret it.
Again, no mods needed-- However, some claim that deposit build-ups in the fuel systems of higher mileage engines can result in clogged injectors because burning 100% straight biodiesel can "clean out" your fuel system (similar to how synthetic oils can clean out petro oil deposits in older engines). This is not a problem with younger engines, and not a problem at all if your burning blends-- only the straight 100% does it. On the positive side, bio keeps your injectors running cleaner than petro.
I've been burning B100 for about eight months now and I am a strong proponent. I believe biodiesel is one way our country can become more fuel independent. U. S. farmers can make as much of this stuff as we want, right here at home, and I'm convinced that by doing so we can not only strengthen our country, but also subvert the economies of our nation's enemies.