I would have given 4 State Diesel a 10 Star rating but there were only 5 stars! We had taken our Dodge Diesel 3500 pickup truck to another shop in Miami Oklahoma to have a new rear main seal put it. Biggest mistake we could have made. The so called mechanic did not even have enough knowledge to do the job. He did nothing but leave parts out, leave a vent hose hanging, damaging parts and put the seal in backwards 2 times. We left that place Before he could do more damage! Paid the incompetent mechanic. Never got any money back. My husband had to be in Texas in a couple of days for a job. He had missed the start date because of the other diesel shop. Looked for a reputable diesel shop in Miami and saw the ad for 4 States Diesel. Called them and talked to Ryan the shop Manager. It was on a Friday and my husband had to be in Texas on Sunday so he could start his job on Monday or he would have lost the job. I told him the story of what had happened and the bad situation we were in. He told me we could bring the truck to their shop and they could work on it to fix it and repair all the damage the incompetent diesel mechanic at the previous shop had done. It was like a weight being lifted from us. It was a big Blessing.. Ryan got on in right away. The mechanic s worked on it all day to repair it but there were many things to make right and having to find a part that was damaged by the incompetent mechanic at the previous shop took time. When the shop closed on Friday their were still things that needed to be fixed on the truck. The shop was closed on Saturdays but Ryan said that he and his brother would go to the shop on Saturday and finish fixing our truck because they knew how much we needed it so my husband to travel to the job in Texas. Our truck was absolutely repaired by the most caring guys!!!! Ryan and his brother went out of their way to do all that for us!!!!! That tells you something about the people that work at 4 State Diesel ! We will never forget the kindness and caring. I wish I would have seen the add for 4 States Diesel instead of stopping at the first one . Big mistake!! If you need mechanic work on a diesel truck or Semi Truck. Go directly to 4 States Diesel. Miami Oklahoma! You will be glad you did!!!! read more

Friendly, honest, and skilled technicians. They get you back on the road quick. Highly recommended!!