NOVELTY - A method (m1) of making a coated article comprising a glass substrate supporting a coating, involves wet-applying a sol, directly or indirectly, on a major surface of the substrate, the sol comprising two alkylsiloxane chemicals having tetra-alkoxysiloxane and tri-alkoxysiloxane structures, respectively; and drying and/or curing the sol to form the coating, where the sol is aged for no more than five months prior to the wet-applying.    USE - For making a coated article such as mirror (claimed) such as mirrors for solar applications to provide anti-soiling, self-cleaning, and/or anti-reflection functions.    ADVANTAGE - A high water contact angle may be achieved using a mixture of at least two alkylsiloxane chemicals that is aged for a short period of time, applied to a major substrate surface through a sol-gel coating process, and cured for a short period of time. When such coatings are used in mirrors for solar applications, for example, such high water contact angle coatings have indexes of refraction compatible with the mirrors and help maintain high reflectivity by keeping the mirrors cleaner than they otherwise would be without such coatings. The coatings enhance the hydrophobic properties of coated substrate surface. The enhancement of anti-soiling and self-cleaning capabilities of surfaces becomes possible through the selection of alkylsiloxane mixtures that are aged and/or cured at different times. In addition to providing anti-soiling capabilities, the coatings advantageously achieve good average total reflection and refractive index values. In addition, the water contact angle of sessile drops of water on the coated article surface corresponds to a hydrophobic coating that is in some ways comparable to surface properties of a lotus leaf that allows water droplets (such as, for example, rain drops, etc.) to roll off its surface.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) method (m2) of making a coated article comprising a glass substrate supporting a coating, involving wet-applying a sol, directly or indirectly, on a major surface of the substrate, the sol comprising tetraethyl orthosilicate (TEOS) and octyltrimethoxysiloxane (OTMOS); and drying and/or curing the sol to form the coating; where the coating has an initial contact angle of 100-131 degrees ;    (2) making (m3) a mirror involving disposing a thin film coating on a first major surface of the substrate, the thin film coating having a reflectivity of 85%; wet-applying a sol, directly or indirectly, onto the thin film coating, the sol comprising two alkylsiloxane chemicals having tetra-alkoxysiloxane and tri-alkoxysiloxane structures, respectively, the sol having been aged for not greater than 3 months prior to the wet-applying; and drying and/or curing the sol to form an anti-soiling coating that at least initially has a contact angle of greater than 100 degrees ;    (3) sol composition comprising: at least two alkylsiloxane chemicals provided at substantially the same weight percents; where a first alkylsiloxane chemical has a tetra-alkoxysiloxane structure, and a second alkylsiloxane chemical has a tri-alkoxysiloxane structure, and where the sol composition is aged less than 3 months and has a cure time of less than 10 minutes;    (4) coated article comprising a multi-layer thin film coating disposed, directly or indirectly, on a first major surface of a substrate, the thin film coating having a reflectivity of at least 85%; and a wet-applied anti-soiling coating formed from a sol aged for not greater than 3 months prior to the wet application and comprising tetra-alkoxysiloxane and tri-alkoxysiloxane components at least initially provided in substantially equal weight percents.