[motrhed87]

Hey everyone,

I have a 300C with about 4500 miles. I feel that the car has become quite sluggish over the last 1,000 miles or so. I brought it into my 5 star Chrysler for a check up. The tech said that he ran it with the diagnostic equipment attached and that the computer said the gas was not burning properly but did not really have an answer as to why this is happening. They called the Chrylser tech line and they said that I should use at least 91 octane gas, not 89 as stated in the owners manual. They also said that an addendum to the manual is scheduled to be sent out stating this as well. I have read the other posts regarding octane rating and everyone else seems to be satisfied with their performance on 89. I was just wondering if anyone else was experiencing similar sluggish performance or had any ideas as to what the problem could be.

Thanks!