Superior Diesel Repair and Performance

Very knowledgeable. Reasonable prices. Prompt Service. Great communication. Highly recommended. I do most maintenance and repairs myself because I don’t trust most shops. I will continue to take my truck here when needed.

If you live in northern IL/southern WI own a diesel truck that needs work bring it to George @Superior Diesel. Don't waste your time anywhere else. I've done tons of work myself over the years on my truck, even egr delete kit, but when it came time to head gaskets it was a no brainer! These guys are quick, their extremely thorough, very friendly and they were the cheapest around. Not only did the save my truck, they saved me from having to spend $20k on another used truck! I definitely recommend them. I'm a customer for life now!

I had a great experience with this shop. George was very nice and knowledgeable and thoroughly explained what was wrong with my truck. He saved me what could have been a lot of money. I highly recommend this place for diesel service. Thank you superior diesel for the outstanding job.

Let me get started with the excellent business these folks have! I was so indecisive what to do with my truck and I was led down the path that our truck was more than we can handle with repairs. Such a lemon I had and they helped me make a decision that I will never regret. Keep it, trade in, sell or fix and they didn’t ask for a penny for their expertise advice. They previously fixed a repair that I was estimated $500 and they did it for $150! Huge difference. I felt trust for once in my life!

I drive over 45 minutes just to go see these guys and I never question doing so.

They are some of the best mechanics that I have worked with, especially concerning diesel. George and Pete take the time to not only complete quality work on your vehicle, but also to educate you as well. My 97 7.3 won't be seeing any other mechanics.

All this quality service for a fair price too. Willing to do contactless pickup/drop-off for Covid-19 measures.\

Don't think twice, just go with these guys.