technical information regarding synoil back to min
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From: Milwaukee Area
Originally Posted by Road Rage,Feb 28 2005, 04:09 PM
This is one of those synoil myths that hangs around forever. I found a 20 year-old article in my archives that had this, and about 9 more, synboil myths.
As best i have been able to determine, looking at my 30 years of info on the topic, the "warning" never has had anything to do with a failed engine, or any engine mechanical failure for that matter. It likely was made up by a salesman or seller of a synoil mfr, hoping to "scare" clientele into staying the course.
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Switching TO synoil on a very old engine is a different matter.I often do not recommend it, esdp for engines with questionable maintenance history, or ones that are 10 years old older. A look into the oil fill will often show a lot of varnish and/or sludge.
I believe it originates from the high detergency of synoils vs the older minoils. Oxidation and sludging were common with old minoils, and in many cases, it was sludge that was keeping seals/gaskets from leaking - valve cover gaskets, even some oil stem seals. Using synoil in an engine with sludge often caused leaks, and it certainly caused the synoil to get very dirty very fast, reqruiring more frequent oil changes than a synoil should require, at elast until the cleaning was completed.
As best i have been able to determine, looking at my 30 years of info on the topic, the "warning" never has had anything to do with a failed engine, or any engine mechanical failure for that matter. It likely was made up by a salesman or seller of a synoil mfr, hoping to "scare" clientele into staying the course.
************************************************** ****************
Switching TO synoil on a very old engine is a different matter.I often do not recommend it, esdp for engines with questionable maintenance history, or ones that are 10 years old older. A look into the oil fill will often show a lot of varnish and/or sludge.
I believe it originates from the high detergency of synoils vs the older minoils. Oxidation and sludging were common with old minoils, and in many cases, it was sludge that was keeping seals/gaskets from leaking - valve cover gaskets, even some oil stem seals. Using synoil in an engine with sludge often caused leaks, and it certainly caused the synoil to get very dirty very fast, reqruiring more frequent oil changes than a synoil should require, at elast until the cleaning was completed.
But not from what I see, they are more even on the cleaning detergents. So maybe 20 years ago this was the case, but now the oils have evened out...
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From: FL...
Switching back will not blow your motor at all...
The only reason people say that you cant go back is because they really dont understand that is just what they are told...
Regular oil has acid in it and that is why you have to change it so quick... Synthetic oil does not have acid so you dont have to change it as quick... Going back to reg oil you are going to put that acid back in the motor, which eats up your cylinder walls...
The only reason people say that you cant go back is because they really dont understand that is just what they are told...
Regular oil has acid in it and that is why you have to change it so quick... Synthetic oil does not have acid so you dont have to change it as quick... Going back to reg oil you are going to put that acid back in the motor, which eats up your cylinder walls...
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Joined: Mar 2006
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From: Pasadena, SOCAL
Originally Posted by YER-SLOW,Jul 17 2007, 03:12 PM
Switching back will not blow your motor at all...
The only reason people say that you cant go back is because they really dont understand that is just what they are told...
Regular oil has acid in it and that is why you have to change it so quick... Synthetic oil does not have acid so you dont have to change it as quick... Going back to reg oil you are going to put that acid back in the motor, which eats up your cylinder walls...
The only reason people say that you cant go back is because they really dont understand that is just what they are told...
Regular oil has acid in it and that is why you have to change it so quick... Synthetic oil does not have acid so you dont have to change it as quick... Going back to reg oil you are going to put that acid back in the motor, which eats up your cylinder walls...
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Joined: Mar 2006
Posts: 780
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From: Kansas City
Originally Posted by YER-SLOW,Jul 17 2007, 06:12 PM
Switching back will not blow your motor at all...
The only reason people say that you cant go back is because they really dont understand that is just what they are told...
Regular oil has acid in it and that is why you have to change it so quick... Synthetic oil does not have acid so you dont have to change it as quick... Going back to reg oil you are going to put that acid back in the motor, which eats up your cylinder walls...
The only reason people say that you cant go back is because they really dont understand that is just what they are told...
Regular oil has acid in it and that is why you have to change it so quick... Synthetic oil does not have acid so you dont have to change it as quick... Going back to reg oil you are going to put that acid back in the motor, which eats up your cylinder walls...
You are so stupid. If I was drinking something it would have shot through my nose when I read your post. That's the craziest thing I've ever read about oil, and I've read some really twisted misinformation about oil. Why are you posting here, your Honda Tech account got banned again?
Joined: May 2006
Posts: 7,430
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From: Ontario
Well, when oil sits around in the oil pan for a long time after it has been used, the gas + air + moisture will breakdown and it starts to turn acidic. Which could pit bearing etc etc.
Why bring up such an old thread to make a comment like that?
Why bring up such an old thread to make a comment like that?
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