The gas station down the road has bio diesel B-99, 99% biodiesel 1% diesel blend. Wondering if anyone else is running this in their LBZ. Does anyone know if this is a safe fuel to use, or if it voids warranty?

Thanks for any advice..

Mine isn't the LBZ, but I don't know of any differences that would matter. I run B100 w/o a problem. In fact, I have 27K on the current fuel filter, probably 2/3 of that w/B100.

manual states not to run more than 5% bio

Better check what your buying before sticking it into your tank. They're are dirty little secrets that come with biodiesel. First, alot of it is not made right and will cause problems, that's why GM says 5%-10%. Just bring a jar with you with a third of water in it, fill the rest with bio and shake. If it doesn't separate in a couple of minutes, it's got crap in it. The water should separate and be somewhat clear at the bottom. Bio is great if you get good stuff. The greenies kill me, they're the first ones to stick it to you to make a buck.