Quote Originally Posted by StevenAg03
if you are looking for lubricity i would not recomend using any of the diesel additives alone. they are mostly alcohols and actually brake down the lubricity of the fluids. i add 1qt of non-synthetic multipurpose 2 cycle oil with every fillup. the truck seems to run a little better with it. also the exhaust smells more like old school diesel exhaust then other trucks without it.
Did you do this before or after you located the downpipe

The **** I have says it lubricates on the bottle, that's good enough for me.