2007 E63
I do like to DIY stuff but there are a few items I would like to get addressed here.
1) When I checked the coolant reserve tank the fluid was topped off but it was clear. I thought mercedes coolant was blue?
2) there are a few oil leaks (Nothing dropping on to the plastic shield under the car though) The carfax shows the intake manifold and valve cover gaskets were replaced however on the front side of the engine to the left looking at it. there is some evidence of oil leaking there. The part that is in front of the valve cover. is this common?
3) is there anyway to really find out without popping of the valve covers to se if the car ever received the revised head bolts? the car fax doesn't specifically mention head bolt replacement but not sure if it would... the seller is going to contact the company that did the valve gaskets and see what the true scope of work was. Another thing though... is this truly an issue or did it just get blown up like many things on forums (at least on Audizine)...
4) I am getting this car as a weekend summer car and not really planning on really driving it. Its more of I am bored and always wanted an older AMG... Should I just skip this and look for a 2011, 2012 model? I just like the look of the 07'... I am a DIY person but not with this type of motor. If it comes down to it, what is the average cost of the head bolt replacement?
Everything works on the car... the interior is mint, drives like new, and the exterior is an 8/10 with a few rock chips as expected.
Tell me to run or tell me to go for it. (I know that the car is cheap however maintenance isn't on what was a 95k car back in 2007. Is there aftermarket warranty I could get. I usually only get CPO cars however never dealt with a third party warranty company and have heard bad reviews...
Thank you,
Richard




I replaced my head bolts for insurance, but honestly my head bolts look great at 88K. I think that the whole issue is blown out of proportion. But if you plan to keep this car for a long time, change them.
The only way to check for new revised head bolts would be to remove the valve covers. There isn't any other way to visually check them. The coolant color is blue, unless they used some other colored coolant.
As these cars age their o-rings and seals tend to leak and need to be replaced. The area needs to be fully cleaned to determine where the leak is occuring.




Last edited by E55Greasemonkey; Feb 12, 2023 at 07:18 PM.
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The list of proactive things you can do for this car is endless…only you can decide where to draw the line. As mentioned above would be easy to spend more than the value of the car in repairs. Granted that’s still less than option packages on most high end new cars…
N
End of rant.




You have to remember, that the E55 and E63 are old vehicles, and so are there engines. You must put money into them regardless if your a M113K or M156 lover.
My E63 is 16 years old, and I spent over $7K rebuilding my entire suspension, as it was worn out. I'm certainly not complaining, that fact of the matter is your going to spend money regardless of which platform you prefer.
I like the E55 and the M113K, but I also love the M156. And Mercedes-AMG don't build cars like these anymore.
The key is to get your car to a state, where you just perform routine maintenance, with no big ticket items. But occasionally something may pop up, just may prepared for it to happen as these cars get older and older each year.
Last edited by Yuille36; Feb 14, 2023 at 02:44 PM.
I had a E60 535i (N54 twin turbo I-6) for a while and I was on the forums and I literally never came across a person who actually had their engine fail on them. I'm sure it happened to some people, but it wasn't nearly as prevalent as the chatter would have you believe.
Back to the M156, FCP Euro recently did a video entitled, "Mercedes E63 AMG Engine: Everything You Need To Know - The Mercedes M156 Engine Guide" and they didn't even think the head bolt issue was worth mentioning.
Chris Sullivan did have the cam adjuster issue, but he reported that his headbolts were fine (but he changed them anyway):
Disclosure: I just bought a 2008 S63 with the M156 (70K miles).




I did ask my shop (Benz Elite Automotive) of how many M156 they had in the shop for broken and failed head bolts, and the answer was none. Most of their customers fed into the issue just like me. When we removed my head bolts at 89K, they looked great my mechanic even questioned why I'm replacing them.
If I had x-ray vision, I would have left them alone. But, there is always the what if. I think that hype is overrated, but one cannot predict when a failure will occur. So my answer is this, if your that concerned about it, then change them. Or wait until you start seeing minor issues, that is leading you to a potential failure.
You will start to see more consumption of engine coolant way before complete failure, and that is your clue to have the issue addressed right away. There are a lot of M156 equipped AMGs, that still to this day have the old head bolts without any issues, and way into the 150,000 miles mark.
This was my mindset going in, I can pay a little now, or I can pay a lot later. It's easier to fix a potential problem, then to fix a disaster later. We all must decide this for ourselves.
These are my head bolts, out of my 07 E63. Not to bad, but there is that one that looks suspect. It's the darkest one in the middle.
After talking to my good friend that is a AMG Shop Foreman , says that from Mercedes documentation they've seen failures occurring around 90K. Keep in mind that is typical failure.
But there isn't any guarantee that failures can't happen before or after that mileage. I tried to mitigate the issue by changing my engine coolant every two years instead of every four years, until I actually had the head bolts changed. .
Last edited by Yuille36; Feb 21, 2023 at 03:04 PM.
Running 10W-60 year-round in any climate that experiences a real Winter is ridiculous.
It's like the wheel spacer debate. For every person who says that they want to add 10mm spacers, there are a handful of responses about "RIP your wheel bearings, lol"...but no one can point to this actually happening at some significant rate, all while ignoring the countless drama-free implementations.
Search around on here in the sub-forums that have M156 cars.
-You'll find high-mileage examples on original head bolts from the defective period and others where super low-mileage cars experienced failures.
-You'll also find plenty of photos of head bolts changed as a preventive measure that were showing clear evidence of corrosion (well on their way to failure).
Lastly, don't ignore that MB-AMG changed the design of the head bolts a few years into the production run to a much stronger E-Torx head.




