[Healeys] How could this be?

[Greg Lemon]

"Later in the day she double checked her receipt and noted the wrong oil was 
indicated."

truly incredible story, the wife a) looked at the receipt from the shop, and 
b) knew the wrong oil had been used?

Sorry couldn't help it, and my wife is a wonderful gal who helps me bleed 
brakes and such, but I am quite sure she has no clue as to what the correct 
oil is for her Honda.

Can't imagine how "the wrong motor oil" could ruin an engine in such a short 
time, it might increase wear over time, only possible theory I can think of 
that might make it true (I still don't think it is), modern engines are 
designed to run on very thin oil, as thin as 0w-20, could a heavyweight oil 
such as a 20w-50 be so thick as to not penetrate or flow into some of the 
tight clearances, resulting in oil starvation?

Greg Lemon