My 2006 Cobalt LS has 115,000 miles on it and runs like I bought it brand new. I do what Gopi Hira does, but I use conventional.
However I change my oil filter once a month, and always change my oil once every two months. I drive about 1,100 to 1,500 miles a month - some city some highway.
Cheapest insurance on the planet. Besides engine care, I drive reasonably without rabbit starts and stops, and I don't abuse good equipment. Four years after I bought the car, battery, alternator, serpentine belt, and other wear-n-tear items were replaced, and are going to be preplaced again in 2015. Every year I flush and winterize with new coolant.
Small things add up over time and prolong the investment. For me, I'm retired, I'll have this Cobalt for many more years without the need to invest in another car. Money spent now, for me anyway, at today's prices is better than a breakdown later on or even worse.
Doing things myself - nothing major, saves a retired person like myself, a lot of doe-ray-me later on.
Last edited by John-o; 12-07-2014 at 06:39 AM.
Reason: added information