Mozart's piano had pedals. Mozart used them.
In addition to the damper pedal, you might consider hand pedaling. (Keeping your left fingers depressed during the same harmony.) This will give you more warmth with less blurring.
Well I ended up auditioning for the piano professor yesterday. It was really "spur of the moment." I went to ask him what the requirements were for testing out of the piano proficiency, and he said "let's just do it today!" He asked me to play a few easier scales, like G and B-flat, then he asked for some minor scales, and finally he wanted me to play the scale and arpeggio of the parallel minor of D major, second inversion. Yikes! That one caught me off guard. He had me do a few chord progressions and some sight reading (which I think I did really well on), and then he asked me to play something for him. I played the Mozart piece - with pedal, though moderately. At the end of the audition, he said that I played "very nicely and beautifully" and I passed "with flying colors" and his "highest recommendation"!!! So even though the whole audition caught me by surprise, I am thrilled that I passed!
There was a farmer had a dog and BINGO was his name-o... Down with ignorance, down with ignorance, down with ignorance ...oh yaand BINGO was his name-o * hugs * whispers (I think you're my favorite )