you dont have to be a mechanic to get this job done awesome product pleasant smell after use thats about it not great but not bad im going to try again maybe beware if you are chemically sensitive four stars used mercedes at auction and it had a very bad odor get it i was amazed at how dirty the fluid that drained out looked great product it cleans well and l removes any it works two stars this product works really good my car was a little hard to get to works well smells nice a product that works wonders there are still 10 dirty mold remained