Shampoo Recommendations for Glass Coated Car

[wheelhot]

Hi,

So recently got a new car glass coated, and the person told me not to use any wash and wax kind of shampoo as it's not good for the coating. He also mentioned avoiding any cleaning products that are oil based as the coating is weak against chemical and oil-based contaminants.

Therefore, anyone here got recommendations on what kind of shampoo be it Meguiar or other brands that are suitable to use?

Thanks!

[wheelhot]

Re: Shampoo Recommendations for Glass Coated Car

Oh and what about those no-rinse shampoos?

[Rwlucas85]

Re: Shampoo Recommendations for Glass Coated Car

Others feel free to correct me if I am wrong on these points, but here is my understanding of these questions.

The reason for advising against wash and wax type products is not to protect the coating itself, but to avoid masking the properties of the coating. If you put a layer of wax on top of a coating, the water behavior will line up more with the top wax layer, which will make one think the coating has failed. It really hasn't, it's properties are just being masked by the wax on top.

This can also happen with certain soaps that have gloss enhancers or any such things. I've seen mentions that gold class in particular has a tendency to mask the behavior of coatings. If your primary goal of the costing is the water sheeting effect, then you want to avoid putting anything on top of it as best you can. I'm sorry I do not know meguiars soaps well enough to give an advice on that one. I use a different brand of no rinse for my coated car. You can use whatever you like, just be aware that whatever the top layer of protection is will be the primary factor in water behavior.

Finally. Assuming the coating is a traditional SiO2 based coating, they are very chemically stable once they have properly cured. Waxes and sealants will be stripped off chemically WAY before a coating will. Once a coating is on, it will wear over time or by abrasion (polishing) , you don't want to meet the chemical you would have to use to break it down chemically.

[wheelhot]

Re: Shampoo Recommendations for Glass Coated Car

Others feel free to correct me if I am wrong on these points, but here is my understanding of these questions.

The reason for advising against wash and wax type products is not to protect the coating itself, but to avoid masking the properties of the coating. If you put a layer of wax on top of a coating, the water behavior will line up more with the top wax layer, which will make one think the coating has failed. It really hasn't, it's properties are just being masked by the wax on top.

This can also happen with certain soaps that have gloss enhancers or any such things. I've seen mentions that gold class in particular has a tendency to mask the behavior of coatings. If your primary goal of the costing is the water sheeting effect, then you want to avoid putting anything on top of it as best you can. I'm sorry I do not know meguiars soaps well enough to give an advice on that one. I use a different brand of no rinse for my coated car. You can use whatever you like, just be aware that whatever the top layer of protection is will be the primary factor in water behavior.

Finally. Assuming the coating is a traditional SiO2 based coating, they are very chemically stable once they have properly cured. Waxes and sealants will be stripped off chemically WAY before a coating will. Once a coating is on, it will wear over time or by abrasion (polishing) , you don't want to meet the chemical you would have to use to break it down chemically.

Yeah, from all the websites I read, they say the same thing as well about wax layer masking the coating.

Btw, what no rinse brand did you use for your coated car? Can you mention it here? Or it'll be against forum policy so a PM would be better?

[Rwlucas85]

Re: Shampoo Recommendations for Glass Coated Car

I've used meguiars d114 before. I believe. It was discontinued. I'm using optimum no rinse now since it is still available. My house has the unfortunate predicament of my driveway having zero shade regardless of the time of day, so washing in the garage is one of my few options.

[wheelhot]

Re: Shampoo Recommendations for Glass Coated Car

Yeah, it's a pity that d114 was discontinued

[rlmccarty2000]

Re: Shampoo Recommendations for Glass Coated Car

Unfortunately I don’t think Meguires sells any shampoo that does not leave behind a wax or polymer that would not interfere with the properties of a coating. I used d114 before it was discontinued and now have moved to a different brand.

[The Guz]

Re: Shampoo Recommendations for Glass Coated Car

Unfortunately I don’t think Meguires sells any shampoo that does not leave behind a wax or polymer that would not interfere with the properties of a coating.

Sure they do. It is D110 Hyper Wash.

[Nick Winn]

Re: Shampoo Recommendations for Glass Coated Car

All good conversation here, I have not heard of our Gold Class Car Wash Shampoo & Conditioner masking the behavior of a coating, but I could see that happening temporarily. It does not have any actual "wax" in the wash, but it does have conditioners to help with lubricity & gloss, which I could see them masking the behavior of a coating very temporarily.

Agree with The Guz, a good bare bones wash is our Hyper Wash, or even our good old Deep Crystal Car Wash.