Has anyone heard of pouring car engine degreaser down your drains to keep them from clogging?

Way back, many years ago, a plumber told me that I should pour car engine degreaser down my kitchen sink (and down the toilet, too, I think) to keep it from getting clogged.

He explained that even if you never pour cooking oil and grease down your sink, organic material like vegetable and fruit peel become an oily blob when it decomposes and degrades. This then tends to solidify and prevent proper drainage.

He recommended pouring car engine degreaser down the drain from time to time to dissolve and break up the oil. He said that the degreaser is sold in auto parts stores and, IIRC, that it was pink in color. Has anyone heard of doing this? How did it work? Can you give me a brand name?

(I can believe that plant material becomes oily when decomposed. I have a lot of mushrooms on my lawn, and when they shrivel up and die, they get very oily and sticky.)