Myths usually are a holdover from the past. When cars had carburetors and no computers, the oil got contaminated a whole lot quicker. The 3000 mile oil change made sense then. Today, you would only do that under SEVERE driving conditions, such as trailer towing or short trip driving in cold weather. Oils have improved a lot too. Soooo, follow your owner’s manual and it will tell you what’s best.
With fuel injection, the car runs smoothly almost immediately after startup. You only need to idle it to circulate the oil to the valve gear, that takes 15 to 20 seconds. In winter you SHOULD warm up the car till you can actually see out the windsheild. That has nothing to do with the engine, but is a legal requirement.
Today’s gasolines already have all these additives in them. Fuel injection forced the use of detergents to keep those small openings open. The addition of methanol now eliminates the need for adding “gasline antifreeze”.
Tuneups are a thing of the past, but spark plugs still wear out, and the fuel system components will need attention at some time, usually between 60,000 and 100,000 miles… But the annual tuneup is unnecessary; just follow the OWNER’S MANUAL, the world’s most unread best seller.
Winterizing now means just making sure you have oil of the right viscosity in the engine and giving the battery a load test to make sure it will start the car at -30. Where I live, we put on the winter tires as well.
Even a child knows now that high test gas is for engines that require it. Using it otherwise is a waste of money. It won’t give you more power or better mileage.
All the above items have been discussed at great length on this site , and in any newspaper car column. What the author of the article was trying to do was to get some personal visibility to either sell something or keep his job.