Very thorough, top-notch mechanics - personable and friendly as well. I discovered them on my way to Cub and thought I’d take my car there for an oil change and they are now my 1st choice here in Stillwater. Where I work there is an auto department and when something goes wrong, I ask them first because they teach this stuff, so I know what's wrong with my car and what needs to be fixed. Basically, I have an old car, and a list, and when I can afford it, I get what I can done. When I brought my car to Certified Transmission for the oil change, they did a complete check - and I mean THOROUGH - and they gave me a list of what needed fixing in order of importance and guess what - the lists matched. It's a very nice thing to find an auto mechanic you can trust. It seriously takes a load off the worrisome mind. Bottom line - these guys go above and beyond.