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Changed Plugs Today

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Old Apr 25, 2012 | 11:17 PM
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c3nthusiast's Avatar
c3nthusiast
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From: Fort Washington, MD
2008 C300
Changed Plugs Today
Changed my plugs at 127,570 miles. It was the easiest spark plug change of any car I have ever worked on. I bought NGK 4288 spark plugs for $88 shipped. It took me 30 minutes to change them all. Really simple. Save yourself $200+ in labor at the MB dealer.

Car is much more responsive off the line. Idle is quieter and smoother. Kinda feels weird because my car has never run like this before. LOL!

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Old Apr 25, 2012 | 11:52 PM
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Ate they high performance plugs ?
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Old Apr 26, 2012 | 12:25 AM
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Trying to remember but isn't the spark plug change interval suppose to be 90,000 miles?
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Old Apr 26, 2012 | 12:57 AM
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c3nthusiast
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I kept asking the dealer if I should change it and they kept saying "No". So I figured since they didnt want to take my money it was ok. Lol!
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Old Apr 26, 2012 | 01:19 AM
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Originally Posted by c3nthusiast
It was the easiest spark plug change of any car I have ever worked on.
Someone either never owned a muscle car or is exaggerating.
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Old Apr 26, 2012 | 10:34 AM
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Originally Posted by c3nthusiast
I kept asking the dealer if I should change it and they kept saying "No". So I figured since they didnt want to take my money it was ok. Lol!
No kidding.

Does have my curiosity peak. I'll have to dig out the book.
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Old Apr 26, 2012 | 02:03 PM
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Originally Posted by c3nthusiast
I kept asking the dealer if I should change it and they kept saying "No". So I figured since they didnt want to take my money it was ok. Lol!
Those plugs look extremely worn out. I wonder why they were against changing the plugs. Are the oem plugs NGK or Bosch?
Last edited by Domm; Apr 26, 2012 at 03:09 PM.
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Old Apr 26, 2012 | 03:47 PM
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what about a DIY post for this?
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Old Apr 26, 2012 | 10:05 PM
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Originally Posted by c3nthusiast
I bought NGK 4288 spark plugs for $88 shipped.
88 bucks??? Damn...
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Old Apr 26, 2012 | 11:39 PM
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Originally Posted by TexFinn
88 bucks??? Damn...
Typo $68 shipped.
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Old Apr 27, 2012 | 12:05 AM
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Originally Posted by c3nthusiast
Typo $68 shipped.
$10 per spark plug is on the higher end of the spectrum, but not too surprising for a MB. Where'd you get your plugs from and what brand were they?
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Old Apr 27, 2012 | 12:30 AM
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'08 C300 Lux Barolo Red Beige Leather P2 MM 18" wheels '84 944
Originally Posted by c3nthusiast
Changed my plugs at 127,570 miles. It was the easiest spark plug change of any car I have ever worked on. I bought NGK 4288 spark plugs for $88 shipped. It took me 30 minutes to change them all. Really simple. Save yourself $200+ in labor at the MB dealer.

Car is much more responsive off the line. Idle is quieter and smoother. Kinda feels weird because my car has never run like this before. LOL!

What's the gap on those things? The second from right is REALLY gone. why did you wait so long, anyway? When the V6 first showed up (W210 and ML) the recommendation was 100K miles.
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Old Apr 27, 2012 | 12:17 PM
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....apparantly, the dealer told him.
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Old Apr 27, 2012 | 10:58 PM
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'08 C300 Lux Barolo Red Beige Leather P2 MM 18" wheels '84 944
Originally Posted by JimPap
....apparantly, the dealer told him.
Given that dealers are in business to make money, it's hard to believe that they would recommend leaving the plugs in to the point where the center electrode is burned up and the gaps are far beyond spec.
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Old Apr 27, 2012 | 11:29 PM
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127,570 miles? They were well overdue for replacement.

That filter looks fresh though.
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Old Apr 27, 2012 | 11:51 PM
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Originally Posted by RLE
Given that dealers are in business to make money, it's hard to believe that they would recommend leaving the plugs in to the point where the center electrode is burned up and the gaps are far beyond spec.
Maybe they were hoping it'd cause more damage? it sounds very malicious but we can only guess as to why they didn't want to make quick $$$

At least it looks like the spark plugs have normal wear and theres no signs of engine problems
Last edited by Domm; Apr 28, 2012 at 12:21 AM.
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Old May 5, 2012 | 09:53 AM
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2009 C300 Luxury P1 w/Multimedia, Arctic White
127K? How has your overall reliability been so far?
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