Engine Break In rules
Thread Starter
Newbie
Joined: Jan 2019
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CLS 450 4Matic
Engine Break In rules
Hello everyone. Just picked up my CLS450 4matic and the owners manual has no engine break in rules? Am i missing something or is the new M256 engine so good?
here is a picture of my spec. Ruby black, brown interior, deleted amg exterior package
here is a picture of my spec. Ruby black, brown interior, deleted amg exterior package
Junior Member
Joined: Oct 2018
Posts: 41
Likes: 7
cls
no downshifts
no full throttle
no higher than 4500 rpm
no higher than 80 mph
im at 780 miles and can’t wait to stomp the throttle
Thread Starter
Newbie
Joined: Jan 2019
Posts: 13
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CLS 450 4Matic
Thank you for the reply. AMG are always finnicky about their break in period. I will follow that guid for now considering that the 53 and the 450 have the same engine. I was surprised i had zero mention in my manual.
Junior Member
Joined: Aug 2012
Posts: 33
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From: Toronto
C300>GLA45>E43>CLS53
Yes. AMG models have that. Non-AMG models don't require a break in routine. Of course, your welcome to follow those guidelines as a safety measure.
I believe the AMG models go through more stress and load on the engine and transmission, so its only normal to have the break-in period in place. After all, it's the same engine as your 450, just that it/s up-tuned and added the extra electric compressor between the engine/transmission.
I believe the AMG models go through more stress and load on the engine and transmission, so its only normal to have the break-in period in place. After all, it's the same engine as your 450, just that it/s up-tuned and added the extra electric compressor between the engine/transmission.
Last edited by jackyff8; Jan 19, 2019 at 05:31 PM.
Thread Starter
Newbie
Joined: Jan 2019
Posts: 13
Likes: 0
CLS 450 4Matic
Yes. AMG models have that. Non-AMG models don't require a break in routine. Of course, your welcome to follow those guidelines as a safety measure.
I believe the AMG models go through more stress and load on the engine and transmission, so its only normal to have the break-in period in place. After all, it's the same engine as your 450, just that it/s up-tuned and added the extra electric compressor between the engine/transmission.
I believe the AMG models go through more stress and load on the engine and transmission, so its only normal to have the break-in period in place. After all, it's the same engine as your 450, just that it/s up-tuned and added the extra electric compressor between the engine/transmission.
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