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  #41  
Old 04-12-2013, 05:49 PM
EZStreet8 EZStreet8 is offline
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The reason I'm saying this about going to 0W-30 AMS oil is because they say it is the best they have and maybe by using a 30 weight oil in your truck it will quiet a cold aluminum rotating system with a heavier film until it warms up and quiets down on it's own from a hotter swollen block. Couldn't hurt and it might just answer your question, about what is wrong. Sounds to me like there is an interesting plan being put into effect on vehicles with three year warranties and 5w-20 oil.....Hmmmm
Just think about that for a minute............Mercedez Benz use 40 weight in all their vehicles, if I'm not mistaken, kinda wanna make you say Hmmmm...don't it

EZ
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  #42  
Old 04-12-2013, 10:55 PM
vman1 vman1 is offline
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Quote:
Originally Posted by EZStreet8 View Post
Guys, I think the culprit is the aluminum block Hemi....the sound goes away after it warms up. That tells me that the aluminum block has a much higher coefficient of thermal expansion than a cast iron block has. This means the aluminum reacts much more radically as far as expansion and contraction and basically when it is cold it has shrunk to the point where it is loose...if you will, and as the engine comes up to temperature the aluminum expands to the size it should be and the noise goes away, because it is now back in tolerance again.

I've heard numerous aluminum block engines that were noisy on start up, but quieten down once they warm up. Drive it for a half an hour....stop turn it off....then start it up again....no noise, what does that tell you...............


Good Luck...but if it's extremely noisy get the area supervisor to come in from Chrysler and check it out...I'm not sure the proper terminology but the head guy to make a decision on a warranty problem ...somebody who has the knowledge and the ability to make a determination in a situation like this...make sure everything is recorded on your file. That you have complained about this noise on an ongoing basis....

You can always get a top notch Hemi guy who builds race engines in your area to listen to it and if he says there is a problem at least you have back up....Just
a thought....Hope this helps
While it might be truth about aluminum blocks, 2012 Ram with 5.7 HEMI does not have aluminum block. At least mine doesn't. Aluminum heads yes.
Healthy engine should not have a noise like mine. All that the aluminum block (if there was one) would do, it would transfer noise better then steel block. If everything was made within the tolerances as it should be and no slap, there would be nothing to transfer.

As for backup, Chrysler couldn't care less about third party engine specialists. They told me that only mechanic they would deal with is a someone at their dealerships.
It is a ridiculous customer service.
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  #43  
Old 04-12-2013, 11:19 PM
vman1 vman1 is offline
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Quote:
Originally Posted by EZStreet8 View Post
The reason I'm saying this about going to 0W-30 AMS oil is because they say it is the best they have and maybe by using a 30 weight oil in your truck it will quiet a cold aluminum rotating system with a heavier film until it warms up and quiets down on it's own from a hotter swollen block. Couldn't hurt and it might just answer your question, about what is wrong. Sounds to me like there is an interesting plan being put into effect on vehicles with three year warranties and 5w-20 oil.....Hmmmm
Just think about that for a minute............Mercedez Benz use 40 weight in all their vehicles, if I'm not mistaken, kinda wanna make you say Hmmmm...don't it

EZ
I don't like the fact that they want us to put 5-20 oil in it. All my previous V8's i was using 20-50 oils and get very high mileages on them without any knocking noise. The RAM 2500 and 3500 with identical engines use 5-30
Go figure. They claim that 5-30 oil is too thick for MDS to work properly.
If I knew for sure that using heavier oil would not void my warranty, I would start using 5-30 at least.
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  #44  
Old 04-15-2013, 01:55 PM
EZStreet8 EZStreet8 is offline
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Vman,

Read this:........ http://www.smartsynthetics.com/artic...0oil.htm.....I think it will answer your questions about warranty and what AMS Oil recommends for your truck.

My biggest concern is having an oil that is thick enough to eliminate noises and protect the engine from wear when the engine is cold. My simple theory is, if it is making noises it's doing something that is causing undue wear on the motor.

I want an oil that will protect it and keep it quiet when it's cold and once warm is thin enough to lubricate it properly and avoid any oil burn off, as well. I'm not too worried about warranty because if the engine ever went.....I'd drain the oil anyway and send a sample in for testing and keep a sample in a bottle.

If the labs are sophisticated enough to be able to determine that.....Huh! I guess that was when it was down a bit on the dipstick and I had to add a few ounces. Besides that Magnesson Moss ruling kind of eliminates any illegal cancellation of your warranty for those types of reasons.

Personally, I wouldn't worry about changing the oil to a different weight at all. But I would start with the 0W-30 Signature Series AMS oil full Synthetic and if that cures the noisy cold start you don't need anything more. Also, AMS Oil recommends that product......

My engine only has about 1200 miles on it now and it's quieter after it warms up, but it doesn't have the mechanical tapping noises yours makes....at all. I'm going to switch to the 0W-30 to avoid getting those noises in the future....
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  #45  
Old 04-16-2013, 01:43 PM
S.C. Express S.C. Express is offline
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If you put 30wt in your truck, the ECU will know. It will disable the MDS and give a CEL. 5w-20 is fine, especially when there is 7 quarts of it.
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  #46  
Old 04-17-2013, 01:17 AM
vman1 vman1 is offline
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Quote:
Originally Posted by EZStreet8 View Post
Vman,

Read this:........ http://www.smartsynthetics.com/artic...0oil.htm.....I think it will answer your questions about warranty and what AMS Oil recommends for your truck.

My biggest concern is having an oil that is thick enough to eliminate noises and protect the engine from wear when the engine is cold. My simple theory is, if it is making noises it's doing something that is causing undue wear on the motor.

I want an oil that will protect it and keep it quiet when it's cold and once warm is thin enough to lubricate it properly and avoid any oil burn off, as well. I'm not too worried about warranty because if the engine ever went.....I'd drain the oil anyway and send a sample in for testing and keep a sample in a bottle.

If the labs are sophisticated enough to be able to determine that.....Huh! I guess that was when it was down a bit on the dipstick and I had to add a few ounces. Besides that Magnesson Moss ruling kind of eliminates any illegal cancellation of your warranty for those types of reasons.

Personally, I wouldn't worry about changing the oil to a different weight at all. But I would start with the 0W-30 Signature Series AMS oil full Synthetic and if that cures the noisy cold start you don't need anything more. Also, AMS Oil recommends that product......

My engine only has about 1200 miles on it now and it's quieter after it warms up, but it doesn't have the mechanical tapping noises yours makes....at all. I'm going to switch to the 0W-30 to avoid getting those noises in the future....
I understand about the oil. However the noise issues remain. I do not want to mask mechanical problem like loose tolerances from manufacturing or whatever is causing the noise with quality oils. Yes it would be just masking a real problem. In my old Olds with 300K miles minor noises did go away after putting 20-50 oil and Slick50 Once or if Chrysler will take care of the noise or at least come up with better explanation then just "it's normal valve train noise" as the dealer said, I will then consider switching to better oil then Penzoil that the dealer puts in the trucks now.
If the noise is normal why doesn't every truck make the same noise and only on cold start. Its a bunch of BS if you ask me.
I am pissed because they simply don't care and don't want to work on warranty issues as they make less money.
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  #47  
Old 04-19-2013, 12:44 AM
EZStreet8 EZStreet8 is offline
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Quote:
Originally Posted by vman1 View Post
While it might be truth about aluminum blocks, 2012 Ram with 5.7 HEMI does not have aluminum block. At least mine doesn't. Aluminum heads yes.
Healthy engine should not have a noise like mine. All that the aluminum block (if there was one) would do, it would transfer noise better then steel block. If everything was made within the tolerances as it should be and no slap, there would be nothing to transfer.

As for backup, Chrysler couldn't care less about third party engine specialists. They told me that only mechanic they would deal with is a someone at their dealerships.
It is a ridiculous customer service.

You're absolutely right Vman...it doesn't have an aluminum block, it is cast iron....which is very stable and doesn't expand or contract much, unlike aluminum. Sorry about that, I did google it to check, but I must have misread it.

Let's just put it this way, all the 5.7 Hemi's are noisy on the initial cold starts, but not like yours. The only thing that really get's their attention is the threat of bad publicity......

EZ
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