Yes, this engine requires Premium fuel. Using Regular fuel will cause pinging and engine damage.
Premium gas of course for best performance
Premium is ok
NO.. it does not need premium gas.. You only have to put premium gas in a car which recommends premium gas. I would recommend a fill up with some mid grade gas atleast once a month...
remove heads seal oil drain so seals dont fall in. then loosen and remove seals. replace and put engine back together. may need special mitsu. tools
premium
YES.
Unless it calls for premium gas in your owners manual your wasting your money using premium.
Premium gas is better!
pump gas would recomend premium
Yes, all gas powered motors can burn premium. Some engines don't run well on regular.
premium
In order to preserve the motor in your CTS you should put only premium gas in it.