I have a GMC terrain 2017 with over 270,000 miles. Hardly any problems with this car. Lately is been making slight clicking noises after driving over 4 to 5 thousand miles and when I changed the oil they put a small bottle of gas treatment in the tank and the clicking noise went away. Then again after certain miles close to have the oil change again started with the clicking noise so I repeated the process with the gas treatment and clicking went away. My question is will it be a good idea to put premium gas to the car? Will better gas will keep the clicking away until I take it to my mechanic?
Premium gas isn’t better gas. That’s just a marketing scheme. It’s all about octane. The higher the octane the more resistant to ignition it is. Higher octane is required for engines with higher compression. It’s not better in anyway, I can be worse actually in a low compression engine because it won’t burn completely.