"The car's f*cked up buddy" - You

"That's got nothing to do with me, though" - Him

That sums it up, and he's correct.

The A/C portion of the conversation is funny, though.

BTW, I don't know what's recommended for 2gs, but 1gs run brake fluid in the hydraulic clutch system.

Also, if you do take him to court, don't come there with "I looked at the car, but I'm not a mechanic. What do I know?" The judge is going to tell you that you should have had a mechanic look at it before you bought it, not after.

This phone conversation makes you look like a chump. I think you're losing in court. I would have hung up on you a long time ago.

You're complaining about dumb sh*t over the phone (except the A/C), and sh*t that 99.9% of sellers wouldn't know was wrong with their car (knock sensor). You can have a leaking master cylinder and still drive the car without symptoms, also. You did!

He may have misrepresented this vehicle, but this isn't an eBay sale. You actually viewed the vehicle before you purchased it. Your repeated contention that "[you're] not a mechanic" is important, not because it supports your position that he ought to refund your money, but rather because it should prompt a realization that if you don't know sh*t about cars, don't buy a car without having a mechanic inspect it. That's careless. All the surprises that came after the transaction are surprises that come with buying a used car (in the case of a DSM, somebody else's mess).