Oil weight
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CLS55 IWC
Oil weight
Hey guys,
As we all know our engines (55K) are relatively loud under normal circumstances. My previous oil change I used 0W-40 Amsoil. What is everyone else running?
Could I run a 5W or 10W and maybe quiet down all the tic tacs flying around in there?
Also I live in Toronto and it can get pretty cold out here on occasion (-30 Celsius worst case)
Any input much appreciated
Thanks,
JM
As we all know our engines (55K) are relatively loud under normal circumstances. My previous oil change I used 0W-40 Amsoil. What is everyone else running?
Could I run a 5W or 10W and maybe quiet down all the tic tacs flying around in there?
Also I live in Toronto and it can get pretty cold out here on occasion (-30 Celsius worst case)
Any input much appreciated
Thanks,
JM
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This place is a joke.
I run 5W-40 Mobil1 . Mine is pretty ticky, but 155k miles and still runs strong. I'm hesitant to go to a heavier weight due to our oil pump quirks.
Last edited by E55Greasemonkey; Feb 15, 2021 at 09:41 PM.
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2005 e55 AMG
I use Bizol 0w-40 and 5w-40. Makes the oil pump whine MUCH more quiet. Also don't worry about the " ticks". When I first bought the car and heard it being driven off the shipping truck I was like...jesus my Crown Victoria with 250,000 miles is dead silent compared to this engine !!
Also I changed everything in my engine when I had it out and it changed nothing as far as engine noise LOL It is what it is.
Also I changed everything in my engine when I had it out and it changed nothing as far as engine noise LOL It is what it is.
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Yea I had three oil pumps apart and there is nothing wrong with them. It's just the design with the triple gear set up.
I put a brand new pump in my engine build and there was no change. Imagine my surprise when we fired it up for the first time !!! LOL
I put a brand new pump in my engine build and there was no change. Imagine my surprise when we fired it up for the first time !!! LOL
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I'm thinking about going to 0w50 in the summer. Any reasons I should not do it???
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Thread Starter
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CLS55 IWC
I am just curious what would the worst case ramifications be if i ran the 5W?
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https://www.buygreatoil.com/oil-viscosity-explained
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2005 e55 AMG
I know it will be higher cold than hot clearly but an 85psi swing ???? Little crazy compared to other race engines I built. At least when I had an 75-80 psi cold I would have 40 psi hot on my small block Ford's !!
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07 E63 AMG, 10 C63 AMG, 07 E63 Designo, 07 E350, 09 C300, 07 C230
Here’s my take on this, if you live in a cold climate where the temps fall below freezing, then you need to go with a thinner weight oil, to help the oil flow thru out your engine, but not so thick that it’s like maple syrup.
If you live in a hot and humid climate where temp reach 100 degrees or more daily then a thicker weight oil like 5W-40 might work best for you.
But if we look back at what BMW recommended in their M3’s and M5’s back in the day, their oil was to thick to flow thru their engines, and they suffered from main bearing issues.
Also oil serves three purposes; lubrication, cooling and cleaning. And if it’s to thick to flow, it will not accomplish any of these purposes, and you will have big issues.
So choose wisely🤔
If you live in a hot and humid climate where temp reach 100 degrees or more daily then a thicker weight oil like 5W-40 might work best for you.
But if we look back at what BMW recommended in their M3’s and M5’s back in the day, their oil was to thick to flow thru their engines, and they suffered from main bearing issues.
Also oil serves three purposes; lubrication, cooling and cleaning. And if it’s to thick to flow, it will not accomplish any of these purposes, and you will have big issues.
So choose wisely🤔
Last edited by Yuille36; Jun 25, 2020 at 09:51 PM.
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2005 E55 AMG
I had no idea the topic of “oil” could be talked about so much. This ranks up there with the header and muffler threads. 
and headbolts.
and headbolts.
Last edited by tlambert; Jun 25, 2020 at 10:40 PM.
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2005 e55 AMG
Hey why not ? LOL 90% of people can't even rebuild there transmission or engine and it doesn't get much simpler than that on these cars if you are going to own one so might as well add more oil talk to keep things moving.
Last edited by SICAMG; Jun 26, 2020 at 07:05 AM.
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2009 SL63 AMG
Here’s my take on this, if you live in a cold climate where the temps fall below freezing, then you need to go with a thinner weight oil, to help the oil flow thru out your engine, but not so thick that it’s like maple syrup.
If you live in a hot and humid climate where temp reach 100 degrees or more daily then a thicker weight oil like 5W-40 might work best for you.
But if we look back at what BMW recommended in their M3’s and M5’s back in the day, their oil was to thick to flow thru their engines, and they suffered from main bearing issues.
Also oil serves three purposes; lubrication, cooling and cleaning. And if it’s to thick to flow, it will not accomplish any of these purposes, and you will have big issues.
So choose wisely🤔
If you live in a hot and humid climate where temp reach 100 degrees or more daily then a thicker weight oil like 5W-40 might work best for you.
But if we look back at what BMW recommended in their M3’s and M5’s back in the day, their oil was to thick to flow thru their engines, and they suffered from main bearing issues.
Also oil serves three purposes; lubrication, cooling and cleaning. And if it’s to thick to flow, it will not accomplish any of these purposes, and you will have big issues.
So choose wisely🤔
The issue with BMW/M was that they designed engines spec'd for 10W60 which is just not compatible for any cold climate. People didn't know any better and trusted the factory spec, so they had a right to be livid when rod bearings started to fail.
Spec and climate are two equally important considerations to selecting a specific oil for your specific use case.
BITOG will probably blow your mind then.
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This place is a joke.
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CLS55
It is, just not with an angry BMW driver ready to floor it the minute they start the car.
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From: Alexandria, VA
07 E63 AMG, 10 C63 AMG, 07 E63 Designo, 07 E350, 09 C300, 07 C230
Just think about the total number of M156 engine that we’re built, tens of thousands. And out of all of those maybe 1% suffered from broken head bolts. Just saying......
