That brings back some memories. I have heard that story from a bunch of GM techs that worked during the '70s. I knew a Porsche mechanic who sweared by it, and did it all the time on 356 and 912 models.

I turned wrenches many years ago, and we also had a fellow that nobody liked, plus he was sort of a moron. He was assigned to the stall next to mine, and one day he got a relativly new VW Rabbit diesel in for a oil change. He grumbled the whole time about how he shouldn't have to work on a pos Rabbit(we were a high end import shop). I was changing the water pump on a early 300SD at the time and he was very amped because he didn't get the gravy job. While I was pressure testing the cooling system of the 300SD, he started the Rabbit and started revving it up. While diesel exhaust enveloped the stall, he *****ed about how the stupid oil light wouldn't go out. I glanced up on the roof of the 300SD, and the new oil filter for the Rabbit was still sitting where he left it, while a large puddle of oil puked out from under the VW. He forgot to install the new filter. It was pretty funny at the time, though I would have been furious if that was my car.

Those little Rabbits were tough, the car was a regular customer for years at the shop and I think it died when the head cracked from overheating.