Contact Us with Any Questions


R&R Diesel is a family-owned operation and is here to serve your needs. We guarantee exceptional service as we WILL find and fix the problem within your equipment.


82971 County Road 6
Renville, Mn 56284




MON-FRi: 8:00a-5:30p

About Us

Your Local Diesel Repair Shop

Greg Renneke, the owner of R&R Diesel, has 40 plus years of experience in the diesel field. Greg began working on engines as a young boy while helping his father who also was a mechanic. All of Greg’s experience has him knowing engines thoroughly. Dillon Renneke, Greg’s son, also followed the same path. He too began working on engines as a young boy and has expanded his knowledge of diesel repair significantly throughout his years of experience. Both Greg and Dillon take extreme pride in their work and treat all that they work on as if it were their own.


All Gearing


Air Systems

Hydraulic Systems

Custom Frame Work


Custom Detailing

Custom Restoration Work


Hydraulic Hoses

Complete Diesel Engine Overhauls

Work on all Diesel Engines


Tim W.

The boys over there at R&R just got my 6.4 diesel back up and rocking. She was real sluggish when I brought it there but not anymore. We just took it on a 800-mile trip yesterday. Mega torque. Thanks R&R for making this super duty run like a rocket. 

Service Performed

Forrest D.

Great people and they do great work.
Service Performed

Eric B.

Great shop to work with!
Service Performed

Jake W.

Truck Driver

I was having a miss and it turned out to be a cracked head, and they did a complete overhaul. They got it done in about a week and half, which is pretty fast for a complete overhaul! I’d definitely send someone in need to R&R Diesel Truck Repair!
Service Performed

Tim W.

Owner of Redwood Auto Sales –2008 Power stroke Service Truck

This is a pulling truck and it just wasn’t pulling like it used to. They tuned it and serviced it and apparently all the fuel filters were plugged and it had to be several things, but it has never run this like before! We went from having no power to twice as much power. We prefer taking our stuff to someone who knows what they’re doing. Our truck was there for about 24 hours and it was ready to roll! We are happy with R&R Diesel!
Service Performed

Tom M.

Welding Business Owner - 2004 F-350

We work the snot out of this truck. The head gaskets were going and had 200,000+ miles on it. I was so impressed. The truck has more power than it ever had! It has better fuel economy too. I have never gotten service like that before!
Service Performed

Cory H.

Feed Truck

I heard an ad on the radio and thought I would give them a try. I hadn’t had any luck going to two other places before. I was having electrical problems and they actually came up with two solutions I’ve never heard of before. I haven’t had any issues since and it's up and running again. I would definitely recommend R&R Diesel Truck Repair!
Service Performed