teal.....wondering what you seeing on your class 8 trucks with common rail fuel systems for life span of the high pressure fuel pump ?
do you know if your fuel supplier is putting in any additives prior to delivery ?
thats my main concern with these newer pickups with common rail ...the Fords in particular have proven to prone to problems with with the HPFP ; also water in the fuel will damage them quickly
one reason I use an additive is to de-mulsify any water present , so the fuel water separator can get rid of it before it reaches the injection system