I applied 601 + 105 + 105 12 hours later + AW 12 hours later to one of our own personal vehicles in September so I could keep a better eye on how its working out. This vehicle is kept outside 100% of the time in a dirty / dusty environment. This vehicle has been washed every 3 to 5 weeks with Duragloss car wash soap and a couple times via ONR in between. After drying, it's usually followed up with a wipe down of DG FCS (Fast Clean & shine). This vehicle was just washed again the a few days ago and there are no signs of degradation in the protection from what I can tell. After a thorough wash + dry + FCS wipedown, this vehicle still looks stunning for what it is and the abuse it receives. I don't know how long I want to continue this test, but it's now been close to ~6 months and DG products have definitely left me impressed in terms of price / performance / eye candy.