Changed the plugs on my 55...

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Jul 24, 2014 | 04:14 PM
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I was going to post this a few days ago when I did my plug swap. These plugs were removed from my 03 SL55 with 64k, they were in pretty rough shape, and I had a hell of a time just trying to back them out. I honestly do not think they had ever been changed.

I went with a 1 stage colder NGK 7AIX plug, and used lots of anti-seize. These went in MUCH easier.

Changed the plugs on my 55...-photo_3.jpg   Changed the plugs on my 55...-photo_2.jpg   Changed the plugs on my 55...-photo_1.jpg  

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Jul 25, 2014 | 06:36 AM
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They look like originals.
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Jul 25, 2014 | 09:09 AM
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Quote:
Originally Posted by fxrs1955
They look like originals.
yes im pretty sure they were.
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Jul 25, 2014 | 10:40 AM
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Book says change them at 60K. Is it better to change them earlier?
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Jul 25, 2014 | 10:57 AM
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It's more of an age issue than mileage.
Over time the plugs tend to "weld" themselves to the heads, that's why the recommended service is based on mileage or age of vehicle.
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Jul 25, 2014 | 11:22 AM
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ahhh Now I know why my tech at the stealer is suggesting a 1600 dollar plug change at 27K.
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Jul 25, 2014 | 12:05 PM
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Quote:
Originally Posted by jrgator
It's more of an age issue than mileage.
Over time the plugs tend to "weld" themselves to the heads, that's why the recommended service is based on mileage or age of vehicle.
this makes sense, because i was worried mine might have been cross threaded at first.
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Jul 25, 2014 | 09:21 PM
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Quote:
Originally Posted by CHADisBAD
this makes sense, because i was worried mine might have been cross threaded at first.
Yes - the OE plugs are a bear to remove. Like you I was worried a couple of them were cross-threaded. The plugs looked pretty tired at 47K.
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Jul 26, 2014 | 07:37 AM
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Quote:
Originally Posted by aeroman
ahhh Now I know why my tech at the stealer is suggesting a 1600 dollar plug change at 27K.

1600 for plugs alone?
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Jul 26, 2014 | 10:19 AM
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Quote:
Originally Posted by fxrs1955
1600 for plugs alone?
I believe Aeroman has a 65 not 55 so 1600 not really surprising.
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Jul 26, 2014 | 01:56 PM
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Yup 65
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