24/7 Mobile Diesel
Road Service &
Heavy Truck Repair
Semi down on Hwy 71? Trailer brakes locked outside Menahga? One call gets an MDOT-certified diesel tech rolling to you — or your truck into our Park Rapids shop.
- Roadside diesel repair
- Semi & heavy truck
- Engine · trans · drivetrain
- MDOT inspections
Stranded? Here's how it works
Breakdowns don't wait for business hours. Neither do we.
Call or Text — Any Hour
Tell us where you are, what you're driving, and what it's doing. Mile markers, county roads, truck stops — we know these highways.
We Diagnose Fast
A few quick questions tell us whether it's a roadside fix or a shop job — so we roll out with the right parts the first time.
We Get You Rolling
Mobile repair on the spot, or a scheduled bay in our shop — with straight talk on timing and cost the whole way.
Diesel Services
From roadside breakdowns to in-frame overhauls — one shop, one number.
Mobile Road Service
- No-start & electrical diagnostics
- Air leaks & brake system problems
- Fuel system issues & priming
- Minor roadside repairs to get you rolling
- Serving Park Rapids & surrounding highways
In-Shop Heavy Truck Repair
- Routine service & preventative maintenance
- Engine diagnostics & overhauls
- Transmission & driveline work
- Suspension, steering & brakes
- Over-the-road trucks & trailers our specialty
Big-shop training.
Small-shop service.
Owned and operated in Park Rapids with one goal: keep hard-working trucks and trailers on the road and making money. When you call, you're talking directly to the diesel tech who does the work — not a call center.
- Local owner-operatorBased in Park Rapids — we know every highway, farm road, and truck stop in the area.
- Dealer-level diagnostics & trainingTrained in diesel technology and dealer-level repair — engines, transmissions, electrical.
- MDOT-certified inspectorAnnual commercial inspections done in-house, with repairs handled on the spot.
- Straight talk, honest recommendationsWe know what downtime costs. You get clear communication and no padded estimates.
Service Area
Shop at 1605 Industry Ave, Park Rapids — mobile service across the surrounding highways.
Mobile Service Coverage
Covering Hwy 71, Hwy 34, Hwy 87, Hwy 64 and US-10 corridors — 24/7 for road calls. Outside this area? Call anyway — if we can get to you, we will.
Shop Hours
1605 Industry Ave, Park Rapids, MN 56470
Get directions →
Truckers trust Straight River Diesel
Read our reviews on Google — or leave one if we've gotten you rolling.
Common Questions
How fast can you get to me?
Depends where you're broken down — within our core area (Park Rapids and ~30 miles out) we're typically rolling within the hour, 24/7. Call with your location and we'll give you a real ETA, not a guess.
What does a road call cost?
You'll get the call-out rate and mileage up front on the phone before we roll — no surprises. Repairs are quoted before wrenches turn whenever possible.
Do you work on farm and ag equipment?
Yes — diesel is diesel. Semis and trailers are the specialty, but we service straight trucks, farm tractors, and other heavy diesel equipment both roadside and in the shop.
What do I need for an MDOT inspection?
Bring the truck or trailer, current registration, and previous inspection paperwork if you have it. Most inspections are done same-visit, and if something fails we can usually fix it on the spot.
Do you take fleet accounts?
Yes — we work with local and OTR fleets on breakdown coverage, scheduled maintenance, and annual inspections. Call and ask for fleet terms.