diesel guys

I use Lucus in my Cummins, buy it in gallon jug, put it in 1/2 gallon container that has 8 oz. marks on it. Put 8 oz in each fill up. I don't notice a DAMN difference at all. But since they have changed the fuel I feel I need something in it.

95 Cummins with 123,000 miles and would like to get another 250,000 at least out of it

So it has taken 15 years to get 123K so it should last me another 30 years...........LOL