Grow up mate, it's just a car.
Couldn't you just wait a few days?
It would take me a few weeks, not days.
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Grow up mate, it's just a car.
Couldn't you just wait a few days?
I'm not going to rag it, the only deviation from the breaking in instructions, will be putting it in Sport +. I will still try to keep below 4500 rpm for 1000 miles. I simply can't purchase a c63s coupe and put it in Comfort.
Best not buy one then if you cant be sensible. Just saying!!I'm not going to rag it, the only deviation from the breaking in instructions, will be putting it in Sport +. I will still try to keep below 4500 rpm for 1000 miles. I simply can't purchase a c63s coupe and put it in Comfort.
Do a couple of hundred miles around town to wear the gearbox clutch packs in, then sport/sport+ should be OK but observe the engine rpm and load recommendations.Don't just drone up and down the motorway - build up the load and driving progressively. The engine in part in particular wants to be run in with reasonably brisk acceleration and varying load, but not to be lugged from low rpm. This will seat the piston rings optimally and give more power ultimately and lower engine oil consumption. Gearbox break-in is for the reasons I said before - clutch and bearings need some running to get to optimum condition before experiencing high loads.
Anyway, you asked if running in is necessary, the answer is that that is the manufacturer's recommendation and it's made for a reason. Be patient and reward yourself with some anticipation. Only little kids don't understand delayed gratification (just kidding!)
Maybe you should have bought something else instead.I'm not going to rag it, the only deviation from the breaking in instructions, will be putting it in Sport +. I will still try to keep below 4500 rpm for 1000 miles. I simply can't purchase a c63s coupe and put it in Comfort.
So would i risk knackering a 20k engine for the sake of a 1000 miles driving gentle... no chance, i have too much mechanical sympathy anyway.
Engine break in and gearbox break in are EXTREMELY important, it allows the piston rings to seat correctly in the bores, if you set off ragging it from day one you will glaze the bores and it will either burn oil excessively or lose power.. or probably both.
Anything mechanical that is new has to have some form of break in using break in oils, it allows for the two metal surfaces to bond and wear together in a uniform manner.
Back in the day if you didnt break in an engine properly it was basically scrap, bearing caps and shells need to be heat tempered via varying revs to seat and wear to the metal surfaces.
They dont just ask you to do it for the crack, its a genuine procedure that is VERY important
You dont see people spending big money on huge engine builds giving it barry big boost as soon as its built, they run them low boost gently for the running in period.
All race cars and engines sit on a engine dyno before going in a car to cover a few hundred "running in" miles.
So would i risk knackering a 20k engine for the sake of a 1000 miles driving gentle... no chance, i have too much mechanical sympathy anyway.
I'd play it like this
First 200 miles gentle Comfort mode no more than 3000rpm using the gears and light throttle.. then 200-500 i'd gradually increase throttle to medium and no more than 4000rpm
Then 500-800 i'd be using upto 5000rpm and med to high throttle (no kickdown) and then after 800 id slowly stretch the car up to the redline every 50 miles or so.
So say 850 then take her to 5500, 900 take her to 6000 and then around the 950-1000 mark you can take it all the way.
I mean all this in small bursts btw not like every gear and never full throttle, your just stretching it slowly, you have to remember the engine has NEVER been upto to these RPM's before.
Then once 1000 is covered your sorted, i'd still keep it easy ish for 500 miles after that (by that i mean no track days and keep the oil temps below 120)
Also bearing that in mind, when running in and stretching the engine make sure it is AT CORRECT OPERATIING temp, take it very easy when she's cold as tolerences are much tighter and giving it too much when its cold will cause the same issues as ragging it from 0 miles.
Good luck
Am I the most boring person on here when I say the last 4 cars I've owned have had launch control and I've never ever used it? I'm not really a quick off the mark guy, more of a country lane twistie guy.
Personally I wouldn't bother, it states in comfort mode for a reason.Thanks for the thorough post... I'm going to follow your advice.... at what point would you allow Sport + mode? Would it be okay after 200 miles, providing I keep the rpm low?
I believe street car engines are broken in at the factory. Do you honestly believe a car manufacturer would trust the single most expesnive part of the car in the hands of the first owner they've never met? It doesn't make any sense.
Besides, car manufacturers stipulate breaking in for 1k miles but not changing oil? Then how about all this swarf and shavings? Most likley because breaking in has already been done on the stand and oil flushed hot before the engine has been put in the car.
Follow the mfr instruction, yes, but don't fret and exercise common sense - you're not going to ruin it.
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