Break in period for 6 hour highway trip
Thread Starter
Member
Joined: Apr 2019
Posts: 94
Likes: 5
2019 C300
Break in period for 6 hour highway trip
Just got my 2020 C300 and loving it. Steep learning curve coming from BMW I-drive operating system.
How many miles should I have on odometer before taking an extended (6 hour) road trip? This would be mostly 70-ish mph highway speeds.
Dealer says no worries can take it right away, no break in necessary. Not sure that is accurate. What do you think?
Thx
How many miles should I have on odometer before taking an extended (6 hour) road trip? This would be mostly 70-ish mph highway speeds.
Dealer says no worries can take it right away, no break in necessary. Not sure that is accurate. What do you think?
Thx
Thread Starter
Member
Joined: Apr 2019
Posts: 94
Likes: 5
2019 C300
MBWorld Fanatic!
Joined: Aug 2005
Posts: 1,306
Likes: 204
From: Sarasota, Florida
2023 E450 Cabriolet, 2019 F150 Platinum, 2014 Dodge Challenger R/T
https://www.mbusa.com/en/owners/manuals
you can download it here, although i only see SUV's for 2020,
Is the c300 the same motor as a 2019 c300 ? if yes, download that one, then you can do a search in the pdf download..
Mike
you can download it here, although i only see SUV's for 2020,
Is the c300 the same motor as a 2019 c300 ? if yes, download that one, then you can do a search in the pdf download..
Mike
Member
Joined: Sep 2017
Posts: 174
Likes: 36
From: Central Oregon USA
2017 C300 Cab 4Matic
I couldn't find a word on breaking in the engine in my 2017 manual. Most mfrs now break in engines on a programmed dyno before installation but check with your dealer. The idea is to gradually seat the piston rings and valves over a wide range of RPM.
Old school break-in (probably redundant now but can't hurt):
Old school break-in (probably redundant now but can't hurt):
- for the first 1000 mi. warm up at idle until the temp gauge moves before shifting to D,
- keep it under 2500 RPM at first and gradually increase max RPM as the 1000 miles accrue.
- don't cruise the highway at a fixed speed,
- vary engine speed considerably by shifting manually
- Go to max RPM occasionally and briefly.
- Change the oil & filter at 1000 miles.
MBWorld Fanatic!
Joined: Aug 2005
Posts: 1,306
Likes: 204
From: Sarasota, Florida
2023 E450 Cabriolet, 2019 F150 Platinum, 2014 Dodge Challenger R/T
so i downloaded the 2019 C300 manual...
what it says on page 134 so your almost there
To preserve the engine during the first 1,000 miles (1,500 km): R Drive at varying road speeds and engine speeds. R Drive the vehicle in drive program A or ;. R Change gear before the tachometer needle is 2/3 of the way to the red area of the tachometer. R Do not shiftdown a gear manually in order to brake. R Avoid overstraining the vehicle, e.g. driving at full throttle. R Vehicles with automatic transmission: Do not depress the accelerator pedal beyond the pressure point (kickdown).
Only increase the engine speed gradually and accelerate the vehicle to full speed after 1,000 miles (1,500 km). This also applies when the engine or parts of the drivetrain have been replaced. Please also observe the following breaking-in notes: R In certain driving and driving safety systems, the sensors adjust automatically while a certain distance is being driven after the vehicle has been delivered or after repairs. Full system effectiveness is not reached until the end of this teach-in process. R Brakepads, brake discs and tires that are either new or have been replaced only achieve optimum braking effect and grip after several hundred kilometers of driving. Compensate for the reduced braking effect by applying greater force to the brake pedal.
what it says on page 134 so your almost there
To preserve the engine during the first 1,000 miles (1,500 km): R Drive at varying road speeds and engine speeds. R Drive the vehicle in drive program A or ;. R Change gear before the tachometer needle is 2/3 of the way to the red area of the tachometer. R Do not shiftdown a gear manually in order to brake. R Avoid overstraining the vehicle, e.g. driving at full throttle. R Vehicles with automatic transmission: Do not depress the accelerator pedal beyond the pressure point (kickdown).
Only increase the engine speed gradually and accelerate the vehicle to full speed after 1,000 miles (1,500 km). This also applies when the engine or parts of the drivetrain have been replaced. Please also observe the following breaking-in notes: R In certain driving and driving safety systems, the sensors adjust automatically while a certain distance is being driven after the vehicle has been delivered or after repairs. Full system effectiveness is not reached until the end of this teach-in process. R Brakepads, brake discs and tires that are either new or have been replaced only achieve optimum braking effect and grip after several hundred kilometers of driving. Compensate for the reduced braking effect by applying greater force to the brake pedal.
MBWorld Fanatic!
Joined: Aug 2005
Posts: 1,306
Likes: 204
From: Sarasota, Florida
2023 E450 Cabriolet, 2019 F150 Platinum, 2014 Dodge Challenger R/T
after that first 1k, i usually change the oil/filter and open it up to make sure no big metals.... then i go to redline but not by slamming the pedal, let it get there at 1/2 pedal so your not putting a big load on the motor... of course don't do any of this until oil/water at normal temp.... after 2500 miles or so i start to give it some juice...
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