Hello all, I am Skeeter that sells the Restore and Wonderfoam. Thanks so much for the kind words on our products, appreciate it. You are right to keep any cleaners stronger than mild dish soap away for any molded black plastic like on the front of the motor of the Verado. Out of the thousands of bottles sold we have had 1 hand full that has had stains. Not sure what they did but I think they did not follow directions or cleaned them in the sun. Some motors came through with a sticker that said do not clean with anything stronger that mild dish soap. I have never heard of any problems with stickers UNLESS maybe they did not wet down the area first. I always tell customers to shake up the wonderfoam bottle, spray water on the boat, motor or what ever you are cleaning first. I do my boat in quarters. Spray on the wonderfoam and wipe around with a soft rag or brush and let set for one min. Then rinse off real well and go on to the next section. When boat is clean and dry spray on the Restore, let dry and wipe off. Easy on and easy off. In fact if any of you order 3 or more bottles of our product and mention this site I will give you a buck off per bottle. But you have mention it either on the order form or call in orders. Lets see lets make it until the end of Sept 2010. Any boat cleaning questions feel free to call me anytime maybe I can help. Double up with your buddies on those orders save shipping. Skeeter “Keep that boat clean” 989 928 4368