[Swift1113]

Hey everyone...

I'm completely new here but I have this potentially scary situation on my hands and was wondering if I could please get some feedback from you all. I'll try to be as brief as possible and I would really appreciate anyone's attention in this matter.

I purchased an Acura Certified 2005 RSX Type-S last August with 38,000 miles on it. It now has 49,000 miles on it. During that time, it has been in for 2 oils changes (every 5000 miles) which were both performed at an Acura dealership every 5000 miles. It has received nothing but 100% synthetic Mobil 1 oil and 93 octane fuel since I have owned it. I do drive it aggressively at times, but nothing too unreasonable.

On Friday on the way home from work I downshifted into 2nd to turn a corner slowly and when I applied the gas again, the car jerked around violently and the acceleration cut in and out randomly. I found that it happened most between 2k-3k RPM. Then CEL started flashing and stayed on immediately after. The car also idled very hard and felt like it was going to stall. I had exactly 1\4 tank of gas left when this occurred. I drove the car home which was about 16 miles and didn't drive it for the rest of the weekend.

On Monday I took it directly to the dealership where the tech threw out the possibility of it being bad gas before ever checking for ECU codes. He then diagnosed it and said there were misfires on all cylinders and that it had to be bad gas. By this point the tank was close to E because I didn't want to fill up again in the event that it was bad gas so that the dealership would be able to determine that. The tech put 1\2 tank in and let the car run. He told me to leave it there for the day and so they gave me a ride to work.

Eventually he called me and said that they did a compression test and all cylinders came back clean. But then somehow they found that one of them wasn't and that it had coolant inside of it. He described it as 'coolant on top of the cylinder'. So right then I am thinking it's a blown head gasket but the tech wouldn't acknowledge that at all.

He then said that they'd have to keep the car for at least a week just in order to determine what's going on AND if they'll cover the expenses at all! Now, the car is still under it's original powertrain warranty. It also has a 100,000 certified powertrain warranty as well as the additional 100,000 extended comprehensive warranty that I purchased.

The tech keeps claiming this is definitely bad gas that caused coolant in my cylinder and says that if they find anything foreign or any signs of premature wear in the cylinder, that they won't cover any of the expenses. Not even the rental car that I have in the interim.

Does this sound like bad gas to anyone? Why would there be debris in the cylinder from bad gas? Wouldn't the fuel filter pick that up?

Premature wear? How am I do know how the previous owner drove this car or if they properly maintained it?

I have so many questions about all of this. Anyone's input would be so highly appreciated as this obviously has me pretty bummed out!

Thanks so much for reading....