Diesel of the Week is presented by
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We’re fortunate that Justin Zeigler’s diesel shop, Zeigler Diesel Performance, is down the road from us in Ohio. As such, we’ve gotten to know Justin well over the years, so it was extra special when he recently broke the horsepower/dyno record at the 2022 Ultimate Callout Challenge on his way to a repeat overall victory. Check out what’s behind his truck’s Cummins engine in this Diesel of the Week brought to you by AMSOIL INC.