Howes or ...?
What do others here think of this additive? Have run it frequently, but its hard to quantify results.
So far (knock on wood) have ~250K cumulatative miles on two 2006 LBZs owned with no injector replacements - compared to the LB7s owned, am doing better. There is some correlation to when I started using Howes over other brands - but certainly nothing scientific.
Is it the Howes additive, better OEM filtration, improved injector design, or...?
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