Diesel Mechanic & Truck Repair in Xenia, OH
A trusted diesel shop serving Xenia and Greene County — pickup truck repair, farm equipment work, heavy duty service, and performance tuning from County Line Diesel Performance, just over in Harveysburg.
Greene County's Diesel Guy.
Xenia and the country around it runs on diesel — farm trucks, work pickups, hay equipment, contractor rigs, the occasional sled-pull project in someone's barn. What it doesn't have is a lot of specialist diesel shops nearby. Big dealers are in Dayton, and most local repair shops do diesel as a side gig at best.
County Line Diesel Performance is about 20–25 minutes south of Xenia in Harveysburg. Real diesel specialist, owner-operated, honest pricing. The kind of place that knows the difference between a fuel-pressure problem and a CP3 problem, and won't sell you the wrong part for the right symptom. Drop the truck in the morning, pick it up done.
Everything Diesel.
Same shop covers the whole spectrum from a daily-driven 2500 to a tractor older than most of the staff.
Engine Repair & Rebuilds
Real diagnostics, real repairs. Injectors, head gaskets, full rebuilds, fuel system work. We figure out what's actually wrong before parts get ordered.
Farm & Heavy Equipment
Tractors, combines, skid steers, hay equipment, hydraulics. On-site service available when the equipment can't easily come to the shop.
Heavy Duty Trucks
Class 6, 7, 8 commercial diesel work, DOT inspections, fleet maintenance, brake and air system service.
Performance & Tuning
Custom tunes, performance programmers, deletes, and power builds for Cummins, Power Stroke, and Duramax.
Worth The Drive.
The closest doesn't always mean the best. Here's why folks from Greene County make the run.
Diesel Only
We don't split our time between diesel work and brake jobs on gas Camrys. This is what we do.
Country Mechanic Pricing
No dealer overhead, no big-city labor rates. Honest hourly rates and fair parts pricing on every job.
Straight Talk
What's wrong, what it'll cost, how long it'll take. You won't need a translator and you won't get talked into anything you don't need.
We Show Up
Equipment that can't travel, we come to it when we can. Working trucks in trouble, we prioritize them. That's just how it works.
Xenia Questions.
What folks around Greene County ask most. Anything else, give us a call.
How far is your shop from Xenia?
About 20–25 minutes south. Easy run down US-68 or SR-380 / SR-73 depending on where in Greene County you're coming from.
Do you come out to farms in Greene County?
For farm and heavy equipment that can't easily come to the shop, yes — on-site service is available throughout the four-county area. Best to call ahead so we can plan the timing.
Do you work on older diesels?
Yes. Pre-emissions Cummins, 7.3L Power Stroke, Duramax LB7s and LLYs — we love the older platforms. They're simpler, they're built to last, and we know them well.
What if my truck won't start? Can I have it towed in?
Yes — bring it in on a flatbed or get it towed and we'll take a look. Call ahead so we can plan the diagnostic time and have a spot ready for it.