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So at the Ford/Subaru dealership i work at we have this duchebag who just bought an 06 Mustang GT and among other outragous things is saying that the engine is lacking power and needs to be replaced. This is the ONLY New Mustang he's ever driven and a car that has less than 5000 miles on it. So to see if we could verify his complaint my boss and I went out on a local hiway, he in the duchebags mustang and I in an identical GT off the lot, and we raced 3 times from 0-60 WOT to see if my car was actually faster. I was like i cant believe that my BOSS actually asked me to race him on the clock. Today was deffinatly a good day!

Oh and by the way both cars were dead equil. F-ing warenty whores

well I'm sure it would be faster if it didn't weigh almost 4000lbs. Great 60/40 weight distribution too.

Yea tell me about it, everyone's like OHH a new GT, to bad a stock WRX can easily beat one! Oh and your $65,000 Mustang GT 500 just got annihilated by my $40,000 STi haha!

"A new car off the lot" @WOT, is not the proper way to break-in any engine, your dealership should have told this DB no way in hell you are gonna do that with a brand new car, that is not broken-in.....oh, a Mustang........never mind. let them all blow up for all i care.

well actually with the way this guy is i'm sure hes been babying it, and anyway with the way they build engines today break-in is really a mis-nomer, should you be easy on a new engine? yes, do you have to be, no. Even at ford and subaru training centers they tell us that it really dosent matter anymore, it's maintenence and general upkeep that will effect the longevity of your engine.

subytech wrote:well actually with the way this guy is i'm sure hes been babying it, and anyway with the way they build engines today break-in is really a mis-nomer, should you be easy on a new engine? yes, do you have to be, no. Even at ford and subaru training centers they tell us that it really dosent matter anymore, it's maintenence and general upkeep that will effect the longevity of your engine.

This isn't the first time I've heard this about new cars recently. My friend bought an RSX-S in 02 when they first came out and was instructed by the dealership to drive the piss out of it because it didn't need any break-in. When he traded that in on his 06 STi this year he was again told by a completely different dealership that no break-in was required and to just drive it like you want to drive it. He drove the balls off his RSX-S right from the get go but put a couple thousand gentle miles on the STi before really opening her up... truth be told I think he was scared of that turbocharged torque

And actually the real way to proporly break in an engine is to drive the piss out of it, just make sure you dont over rev it, thats what creates a good seal for your piston rings. Thats also how they tell you to break in new bike engines as well. but thats a whole other ball game.

Yea, with bike engines, you need to do lots of engine braking as I understood it... and stay under 10k for the first few thousand.

Some breakin isn't a bad thing. We had one customer who blew up his STi. He swapped the short block, and on the first drive hit WOT and KABOOM, vaporized a piston. Brand new stock short block.

I would put an easy 1500 or so miles on the car before destroying it. I'd also change the oil every 750 miles until that point. You'd be surprised at how much metal comes out of your car at 750 miles.

I believe some companies (like Lexus/Toyota) actually break in the engines before the car is put on the lot.

Yeah I think that's the main reason any more....the engines are run at the factory and broken in.

CCR told me to just drive the engine normally when I asked them about breaking it in. I did several engine braking runs, but I don't know if it really makes a hill of beans difference. Seems to be running fine now, so I don't care.

Most bikes require or recomend some sort of break in, hell my 05 ZX-6R redlines at 15.5K , I would think the engine would need some time to get used to that! My break in period was for the first 3,000 miles. Most people say beat the hell out of it, never stay at one RPM for to long and dont rev over 10K. Personally i would take it easy for at least the first 1.5K in a car, personal prefference, and yea change the oil quite frequently.