A method for preparing a product comprising an alkoxy-functional organohydrogensiloxane oligomer, where the method comprises: 1) reacting ingredients comprising: a polyorganohydrogensiloxane oligomer of unit formula: (HR 1 2 SiO 1/2) e (R 1 3 SiO 1/2) f (HR 1 SiO 2/2) g (R 1 2 SiO 2/2) h (R 1 SiO 3/2) i (HSiO 3/2) j (SiO 4/2) k where subscripts e, f, g, h, i, j, and k have values such that 5 ≥ e ≥ 0, 5 ≥ f ≥ 0, 10 ≥ g ≥ 0, 5 ≥ h ≥ 0, subscript i is 0 or 1, 5 ≥ j ≥ 0, subscript k is 0 or 1, with the proviso that a quantity (e + g + j) ≥ 2, and a quantity (e + f + g + h + i + j + k) ≤ 50; and each R 1 is independently selected from the group consisting of a monovalent hydrocarbon group of 1 to 18 carbon atoms and a monovalent halogenated hydrocarbon group of 1 to 18 carbon atoms; and an aliphatically unsaturated alkoxysilane of formula: where R 1 is as described above, R 2 is an aliphatically unsaturated monovalent hydrocarbon group of 2 to 18 carbon atoms, each R 3 is independently a monovalent hydrocarbon group of 1 to 18 carbon atoms, and subscript c is 0 or 1; in the presence of a hydrosilylation reaction catalyst; and a hydro(acyloxy)-functional silicon compound of formula: where each R 5 is independently a monovalent hydrocarbon group of 1 to 18 carbon atoms or a monovalent halogenated hydrocarbon group of 1 to 18 carbon atoms, and R 6 is a monovalent hydrocarbon group of 1 to 18 carbon atoms, thereby preparing a reaction product comprising the alkoxy-functional organohydrogensiloxane oligomer; and 2) distilling the product of step 1) to prepare a distilled reaction product, 3) treating the distilled reaction product of step 2), with treating agents comprising a sorbent, and a compound of formula HOR 7, where R 7 is a hydrogen atom or a monovalent hydrocarbon group of 1 to 18 carbon atoms, thereby preparing the product comprising the alkoxy-functional organohydrogensiloxane oligomer; and 4) distilling the product of step 3), thereby recovering the alkoxy-functional organohydrogensiloxane oligomer. 1) reacting ingredients comprising: a polyorganohydrogensiloxane oligomer of unit formula: (HR 1 2 SiO 1/2) e (R 1 3 SiO 1/2) f (HR 1 SiO 2/2) g (R 1 2 SiO 2/2) h (R 1 SiO 3/2) i (HSiO 3/2) j (SiO 4/2) k where subscripts e, f, g, h, i, j, and k have values such that 5 ≥ e ≥ 0, 5 ≥ f ≥ 0, 10 ≥ g ≥ 0, 5 ≥ h ≥ 0, subscript i is 0 or 1, 5 ≥ j ≥ 0, subscript k is 0 or 1, with the proviso that a quantity (e + g + j) ≥ 2, and a quantity (e + f + g + h + i + j + k) ≤ 50; and each R 1 is independently selected from the group consisting of a monovalent hydrocarbon group of 1 to 18 carbon atoms and a monovalent halogenated hydrocarbon group of 1 to 18 carbon atoms; and an aliphatically unsaturated alkoxysilane of formula: where R 1 is as described above, R 2 is an aliphatically unsaturated monovalent hydrocarbon group of 2 to 18 carbon atoms, each R 3 is independently a monovalent hydrocarbon group of 1 to 18 carbon atoms, and subscript c is 0 or 1; in the presence of a hydrosilylation reaction catalyst; and a hydro(acyloxy)-functional silicon compound of formula: where each R 5 is independently a monovalent hydrocarbon group of 1 to 18 carbon atoms or a monovalent halogenated hydrocarbon group of 1 to 18 carbon atoms, and R 6 is a monovalent hydrocarbon group of 1 to 18 carbon atoms, thereby preparing a reaction product comprising the alkoxy-functional organohydrogensiloxane oligomer; and a polyorganohydrogensiloxane oligomer of unit formula: (HR 1 2 SiO 1/2) e (R 1 3 SiO 1/2) f (HR 1 SiO 2/2) g (R 1 2 SiO 2/2) h (R 1 SiO 3/2) i (HSiO 3/2) j (SiO 4/2) k where subscripts e, f, g, h, i, j, and k have values such that 5 ≥ e ≥ 0, 5 ≥ f ≥ 0, 10 ≥ g ≥ 0, 5 ≥ h ≥ 0, subscript i is 0 or 1, 5 ≥ j ≥ 0, subscript k is 0 or 1, with the proviso that a quantity (e + g + j) ≥ 2, and a quantity (e + f + g + h + i + j + k) ≤ 50; and each R 1 is independently selected from the group consisting of a monovalent hydrocarbon group of 1 to 18 carbon atoms and a monovalent halogenated hydrocarbon group of 1 to 18 carbon atoms; and an aliphatically unsaturated alkoxysilane of formula: where R 1 is as described above, R 2 is an aliphatically unsaturated monovalent hydrocarbon group of 2 to 18 carbon atoms, each R 3 is independently a monovalent hydrocarbon group of 1 to 18 carbon atoms, and subscript c is 0 or 1; in the presence of a hydrosilylation reaction catalyst; and a hydro(acyloxy)-functional silicon compound of formula: where each R 5 is independently a monovalent hydrocarbon group of 1 to 18 carbon atoms or a monovalent halogenated hydrocarbon group of 1 to 18 carbon atoms, and R 6 is a monovalent hydrocarbon group of 1 to 18 carbon atoms, thereby preparing a reaction product comprising the alkoxy-functional organohydrogensiloxane oligomer; and 2) distilling the product of step 1) to prepare a distilled reaction product, 3) treating the distilled reaction product of step 2), with treating agents comprising a sorbent, and a compound of formula HOR 7, where R 7 is a hydrogen atom or a monovalent hydrocarbon group of 1 to 18 carbon atoms, thereby preparing the product comprising the alkoxy-functional organohydrogensiloxane oligomer; and a sorbent, and a compound of formula HOR 7, where R 7 is a hydrogen atom or a monovalent hydrocarbon group of 1 to 18 carbon atoms, thereby preparing the product comprising the alkoxy-functional organohydrogensiloxane oligomer; and 4) distilling the product of step 3), thereby recovering the alkoxy-functional organohydrogensiloxane oligomer.