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Motormouth: Don't top off your gas tank Squeezing that last drop of gas into the tank is a bad idea. It is a throwback to when most people paid with cash and tried to avoid getting weird change. Check your owner's manual for the tank capacity. (Dreamstime/TNS) Published January 09. 2021 12:01AM  By Bob Weber, Tribune News Service Q: My wife owns a 1999 Subaru Forrester. Recently, we smelled gas after her gas purchase, and, after some conversation, she decided it was best to stop when the nozzle automatically shuts off. No more topping off. The problem is that after her last gasoline purchase...

Motormouth: Spark plug problem Mechanics used to apply anti-seize compound to the spark plug threads (some still do), but most plugs are treated and no longer require the stuff. (Dreamstime/TNS) Published December 19. 2020 12:01AM  By Bob Weber, Tribune News Service Q: In a recent column you responded to R.W. from Minnetonka, Minn., that he should not need spark plug replacement of the platinum tipped plugs until the manufacturer recommended 60,000 miles. One thing that is often not considered is that over time, the dissimilar metals in the aluminum heads and the spark plug materials make re...

Motormouth: Changing spark plugs early isn't necessary By Motormouth Bob Weber Text size Copy shortlink: Q: In a recent column you told a reader that he should not need to replace platinum-tipped spark plugs until the manufacturer-recommended 60,000 miles. The dissimilar metals in the aluminum heads and the spark plug materials make removal of the plugs difficult — which means potentially costly. Isn't waiting going to end up being more expensive? A: Although they are dissimilar metals, the steel spark plug shells seldom seize with the al...