I talked to a seafoam rep. in person that worked with diesels. He told me to use 1 can of seafoam 200-300 miles before oil change at max. The carbon in the engine could be cut loose and plug the oil filter. I did try it on my 300,000 mile diesel. It did help with the injectors at the time and a hole ton of crap came out during a oil change. I do my own oil changes.
96 with 320,000, Idm mod,
Tc mod, van turbo, 200/30 rosewood,
T 500 hpop, Dy 3" down pipe,
glowshift gauges, D60kp swap, custom track arms,
steering wheel swap, 6637 mod, Hydra chip, WW2,
calf fuel spring and BB mod
6.0 fan, cooler,
Pmf 2.25 rsk sd springs
78 f-150 turbo big block
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