Urban Myths

Killer6 said
Saying wrong based solely on that paper is a fallacy, especially when fuel injection was just becoming commonplace in practically new vehicles. For a decade, manufacturers
tried to imitate what FI does easily, w/feedback carbs, hi vacuum dump valves, hot idle air bleeds,.etc. etc etc.......... Fuel contamination from excess fuel on coastdown &
rapid decel is no myth, and not very hard to understand, certainly there is a lot of "myth" surrounding other benefits of tetraethyl lead other than it's unrivaled anti-knock
properties, and time is de-bunking some of those. The truth is superior technology, materials, lubricants, and eng. fuel/air management are ALL responsible for the much
improved lifespan and efficiency We take for granted today. Buddy, I've taken plenty of early "unleaded days" engines apart w/enuff ridge to hook a repelling line to so......

fallacy: n; misleading, false( New Websters Dictionary, pocket vest edition )

The fallacy is the statement that FI is the reason of low to minimal cylinder wear, it's not THE reason. It helps some but a bad injector can piss a lot of gas at 70 psi and wash down a cylinder just as well as any carburetor.

Manufacturing technologies were not done for improved longevity of cars; it was done to cut costs! Instead of 6 skilled machinists at 6 different machines, you've got 1 semi-skilled operator who's function is to push "start", "stop", "pause".

I don't beleave materials are better; a great deal of the iron poured is recycled scrap and there are A LOT of impurities left in the iron ( copper, zink, aluminum, lead, what ever the car was made up of that just went thru the shredder ).

I was gonna say lubricants may be better but then it struck me that the trouble people have keeping a lobe on a new flat tappet cam; if lubricants are better, why is there this problem?? And going back to technology; why are cam shafts so damn soft?? In my history of playing with cars, close to 50 years; not knowing I should have kept count; I had like a half-a-dozen engines I put together that I did nothing special in the realm of cam shaft break in. Nothing!!! I installed the cam, fired the engine; some fired right away, some didn't. Once running, I shot timing and then drove the car; one case I drove it 2000 miles with no trouble!

I think the article makes a pretty strong case for singular cause and effect.