No myth - messes up an engine really quick with enuff of them.
Was an enlisted guy on an airbase in the late '60s, married, living off base in an apartment. We had an a$$hole Lieutenant and his wife in the apt complex as well. He would drive past where we were washing our cars, splash the dirty water on us and laugh about.
It was a small complex, only around 23 units, and parking was a zoo. Most of us had a 2nd car for the wife. We tended to honor each other's "spot" even though they were not marked.
The wife and I came home late one night and you know who had his Corolla parked in my usual spot. All other spots were taken so I had no choice but to park in the aisle (near "his" car). Someone woke me the next morning tom tell me about a note under a wiper and a crease in the left rear quarter panel of our '67 Cutlass. The note said something to the effect of "park here again and it will get hit again!" And of course the Corolla was the only one gone in the vicinity of our car.
Called the CHP about the "hit and run", two motorcycle cops stopped by heard my story, saw the note and damage, and we went to knock on the guys door. Of course he was gone. The cops asked why we didn't realign this fellow's way of treating others? I reminded them I was enlisted and he was an officer, so the good old boys network could be a problem.
I confronted the Lt. that night with the note and issue and he just laughed in my face and said he got out of the spot just fine and didn't know anything about the note or damage.
So I waited until the early am of the day I left the service, put most of a box of mothballs in his tank, and left. I checked in with one of my buddies in the apartment on a regular basis and he said the guy was bragging about the mileage and pep his ricer had (vs the muscle cars my buds had), right up until the engine blew. He just couldn't understand how that happened!
Now I don't believe in vandalism but this was one time I felt the a$$hole had it coming, esp with his attitude about feeling he was untouchable and being such a #@%$!!**&.
That's my story and I'm sticking to it!