So, I have a friend that Ive known for well over 45 years. Hes had his own shop for well over 30. He used to work for a GM dealership back in the day before he opened up his own place. I consider him a close friend. That being said, I dont let him work on my daily drivers let alone my Malibus. Ive seen him do some real hack stuff.He has mentioned his grandfather with 40+ years of being a "mechanic".