blue smoke
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Member
Joined: Sep 2007
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From: West suburbs of Chicago
2008 S-550 AMG, 2008 GL450, 2005 Ford F-350, 1998 Bentley Turbo R, 1962 Bentley s-3 Saloon,
blue smoke
I have noticed on cold startups blue smoke from exhaust I only have 500 miles on it. Does anyone know if this is normal?
John
John
Senior Member
Joined: Feb 2007
Posts: 292
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From: Las Vegas, NV
GL450 (Alabaster White/Black Interior)
Blue smoke means that oil is getting past the rings and getting burned in the combustion process. I would keep a very close eye on it. Mine has never done that but since your car has so few miles on it I would not be overly concerned yet as you are still breaking it in. Make sure to vary your RPM's alot during your break-in period to help the rings get seated in. Since these cars come with synthetic oil from the factory the break-in time on these engines will take longer than an engine that has conventional motor oil. Also, if it is cold outside, the engine will have more a tendency to do this (i.e. smoke) until the engine gets up to temperature.
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Joined: Sep 2007
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2008 GL450 / 1999 ML320
No blue smoke from my 08 GL450. Currently at 1600 Km (1000 Miles) and not a hint of anything like that. I would keep a close eye on it and let your dealers service manager know.
Senior Member
Joined: Apr 2007
Posts: 252
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From: Central PA, Jersey Shore
'16 S550, '03 & '15 GMC Sierra 1500, '17 C300
Blue smoke means that oil is getting past the rings and getting burned in the combustion process. I would keep a very close eye on it. Mine has never done that but since your car has so few miles on it I would not be overly concerned yet as you are still breaking it in. Make sure to vary your RPM's alot during your break-in period to help the rings get seated in. Since these cars come with synthetic oil from the factory the break-in time on these engines will take longer than an engine that has conventional motor oil. Also, if it is cold outside, the engine will have more a tendency to do this (i.e. smoke) until the engine gets up to temperature.
The factory suggests a 1K mile break-in on a GL320. What are your thoughts?
About 50% of my driving is highway, generally 350-450 miles round-trip at a clip. With my new vehicle, I have not used cruise control, and was diligent about keeping speed between 50-55MPH in the initial 1K miles. This past weekend, I did another 350 miles, and pushed her to 55-65MPH. I also had an incident with blue/grey smoke yesterday - had not noticed it before, but I did wash the vehicle Sunday late afternoon, so maybe there was some residual moisture in the exhaust pipe.
Senior Member
Joined: Feb 2007
Posts: 292
Likes: 1
From: Las Vegas, NV
GL450 (Alabaster White/Black Interior)
Bean,
The factory suggests a 1K mile break-in on a GL320. What are your thoughts?
About 50% of my driving is highway, generally 350-450 miles round-trip at a clip. With my new vehicle, I have not used cruise control, and was diligent about keeping speed between 50-55MPH in the initial 1K miles. This past weekend, I did another 350 miles, and pushed her to 55-65MPH. I also had an incident with blue/grey smoke yesterday - had not noticed it before, but I did wash the vehicle Sunday late afternoon, so maybe there was some residual moisture in the exhaust pipe.
The factory suggests a 1K mile break-in on a GL320. What are your thoughts?
About 50% of my driving is highway, generally 350-450 miles round-trip at a clip. With my new vehicle, I have not used cruise control, and was diligent about keeping speed between 50-55MPH in the initial 1K miles. This past weekend, I did another 350 miles, and pushed her to 55-65MPH. I also had an incident with blue/grey smoke yesterday - had not noticed it before, but I did wash the vehicle Sunday late afternoon, so maybe there was some residual moisture in the exhaust pipe.
I don't know a whole lot about diesel engines but I would assume the break in period would be somewhat similar to gasoline engines in that I think it is important to vary your RPM's during break in. It sounds like you do a good amount of highway driving so you will want to ensure ,to the extent you can, you vary the RPM's (which I realize is not an easy task on the highway). I personally would be less concerned about the speed and more concerned about varying the RPM's. I hope that helps but again I have never owned a diesel and hopefully my advice is not the exact opposite of what you should do. Regarding your smoke observation, generally speaking a white looking smoke is moisture and blue/grey looking smoke is oil.
Jeff
Junior Member
Joined: Feb 2007
Posts: 43
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From: Fort Lauderdale
Mercedes GLE 63S / GL 420 CDI / C250 Diesel 4 MATIC
