[Solved] Should I get an oxygen sensor?
A few months ago I got my first car which is 1990 Opel Kadett-E 5-door hatchback with 4-MT and 1.6l naturally aspirated i4 with a single point injection system for about $900. 125k miles. Runs perfectly fine, although some work had to be done. I get about 23mpg on a highway and 16 in the city, however mechanic tells me that I can get much better gas mileage if I get a working oxygen sensor. Is it worth it? (No emissions testing required in my country)
It helps improve your gas mileage, but make sure you also have checked all other factors as well (correct tire pressure, good spark plugs, air filter,...)