In late June of 2017, I cleaned the paint on my Black 2013 Ford Fusion with one coat of DG 501 mixed with 601 at the recognized 4:1 ratio, then followed upo with 2 coats of DG 105 mixes with 601 at the same 4:1 ratio. I waited about 20 hours between the 2 coats of the 105/601 combo. This car is not driven daily as my wife works from home and the car is garage kept. This combo with weekly washes with DG car wash, or DG Rinseless, or DG Waterless with an occasional shot of Aquawax, or Fast Clean and Shine still looked like it was done yesterday. Fast forward to 2 weeks ago, I decided to do the winter prep on the car. This time it was the 501/601 combo, followed by one 105/601 combo. Then about 24 hours later, I used the DG 111/601 combo for the final coat. Last week when I washed the car with DG car wash I was disappointed, the car no longer sheets water like it did before, and the beads were quite flat compared to 105/601. I was under the belief the sealant in 111 and 105 were the same, but apparently not. Time will tell if 111 is as durable as 105.