best fix for a lil blue smoke is not lookin out the back window this is idle blue smoke that clears under a load Do you wanna start rebuilding every truck at the truck stop look at thier exhaust!!!!!!!!!!!
And a lil lucas will seal up a lil leak and prolly extend oil additions another few hundred milers

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commercial fisherman diesel in my blood in my boats trucks and Dear old Dad has had me drivin them since i got my first license in 1968
1986 300 SDL 427654
1999 Chevy Crew Cab Dually 225423
1986 300 SDL 287000 Dad's
1987 190 Turbo 158000 Mom's (my inheritance)