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Must read for those of you not driving your car in Winter

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Old 12-07-2018, 09:59 AM
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joemessman
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Default Must read for those of you not driving your car in Winter

https://www.corvetteblogger.com/2018...erm=2018-12-07
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Old 12-07-2018, 10:03 AM
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I just saw this about 10 minutes ago and was going to post the link. You beat me to it.
Old 12-07-2018, 10:18 AM
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Sconn
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So is this something that can happen after one season? Do I need to syphon out some gas if I can't drive it down to 1/4 tank?
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Old 12-07-2018, 10:25 AM
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Very informative video clip !

thanks for posting. I did get Keith's Corvette Blogger email last night, but didn't bother watching the clip until now.

Now that I've got my Michelin All season tires, no need to sit..... unless salt, snow, or ice....

Last edited by Strake; 12-07-2018 at 10:39 AM.
Old 12-07-2018, 10:26 AM
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Hopefully this well help with the minority on the forum that continue to insist and tell others to fill the tank to the top before storage.
Old 12-07-2018, 10:39 AM
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Inferno24
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Well as soon as i get back to Jersey from California and we get a nice day it looks like I'm going for a ride to burn off some fuel. If I am not mistaken i have about 3/4 tank.
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Old 12-07-2018, 10:39 AM
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Question - why is one person's opinion (on some internet blog) to be considered Gospel?
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Old 12-07-2018, 11:00 AM
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Mine has been parked with a full tank since Nov.1st and this is the 6th Winter storing my '14 using the same procedure. (Got my car in Oct. '13) Have experienced 0 problems. Too late to change anything for this time...
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Old 12-07-2018, 11:01 AM
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Originally Posted by KenHorse
Question - why is one person's opinion (on some internet blog) to be considered Gospel?
I can understand, but in this particular instance there was a very well respected mechanic by the name of Paul Koerner that concurs with the recommendation submitted to him from GM engineers. I can't site the exact article on this subject, but it is not one mans opinion. And the fact that the gas tank is a closed system ensures the moisture concern is no longer a factor. Thanks.

Last edited by joemessman; 12-07-2018 at 11:02 AM.
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Old 12-07-2018, 11:06 AM
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Originally Posted by Sconn
So is this something that can happen after one season? Do I need to syphon out some gas if I can't drive it down to 1/4 tank?
In the whole scheme of things if your tank is left full over the winter your chances of sulfur contamination of the sending unit are considerably increased. By no means will it guarantee contamination. Only a small percentage of owners cars will result in this issue occurring. But why take the risk considering the potential costs?
Old 12-07-2018, 11:13 AM
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If this is correct, GM should official notify the public about this. I know people with GM read this forum, can someone step up and verify if this is correct?
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Old 12-07-2018, 11:15 AM
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I know the linked article claims this isn't an issue with 'normal driving' but if you drive around with the gas consistently over a 1/4 tank, wouldn't the unit still be submerged in gas most of the time - especially if you only drive it a few times per week as many corvette owners do?
Old 12-07-2018, 11:21 AM
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Originally Posted by kennyjames21
I know the linked article claims this isn't an issue with 'normal driving' but if you drive around with the gas consistently over a 1/4 tank, wouldn't the unit still be submerged in gas most of the time - especially if you only drive it a few times per week as many corvette owners do?
This a very valid point. My only thinking is that by driving the car around and splashing the sender with moving fuel it doesn’t happen as much. But I could be FOS too. I have been doing the 1/4 tank thing for a couple winters now. Can’t hurt it.
Old 12-07-2018, 11:24 AM
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Originally Posted by kennyjames21
I know the linked article claims this isn't an issue with 'normal driving' but if you drive around with the gas consistently over a 1/4 tank, wouldn't the unit still be submerged in gas most of the time - especially if you only drive it a few times per week as many corvette owners do?
The article states:"Paul shows how the sending unit sensor card contact point on the float would actually be submerged in fuel. That’s not an issue with normal driving because the sending unit float moving up and down helps keep the contacts clean. However, should it remain submerged over long storage periods, sulfur contaminants in the fuel can change the resistance of the sending card, causing issues with the fuel system."

I'm done. Was just trying to help.
Old 12-07-2018, 11:41 AM
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Originally Posted by joemessman
In the whole scheme of things if your tank is left full over the winter your chances of sulfur contamination of the sending unit are considerably increased. By no means will it guarantee contamination. Only a small percentage of owners cars will result in this issue occurring. But why take the risk considering the potential costs?
Well that's just it... I don't want to risk having a problem when a solution is so simple. I'm just trying to figure out how to remedy my 3/4+ full tank as my car is basically parked for winter.
I only use Chevron gas at the highest octane. Will Sta-bil reduce the sulfur levels?

​​​​
Old 12-07-2018, 11:44 AM
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Mayor111
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Originally Posted by kennyjames21
I know the linked article claims this isn't an issue with 'normal driving' but if you drive around with the gas consistently over a 1/4 tank, wouldn't the unit still be submerged in gas most of the time - especially if you only drive it a few times per week as many corvette owners do?
I was going to ask the exact question. We have ALOT of guys here that have Vettes for 3 to 4 years that have under 3000 miles on them... To me, they're sending units are submerged under fuel alot more than mine is from Nov to Mar while in winter storage...would you agree?
Old 12-07-2018, 11:49 AM
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Originally Posted by Mayor111
I was going to ask the exact question. We have ALOT of guys here that have Vettes for 3 to 4 years that have under 3000 miles on them... To me, they're sending units are submerged under fuel alot more than mine is from Nov to Mar while in winter storage...would you agree?
I wonder if the colder temperatures during the storage period contributes to this sulfer formation.

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Old 12-07-2018, 11:51 AM
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While we're on the subject, has anyone actually done an autopsy on a dead sending unit to confirm sulfur is the actual culprit?

I ask because there's a LOT of Corvette "lore" out there that simply isn't true

Last edited by KenHorse; 12-07-2018 at 11:52 AM.
Old 12-07-2018, 12:05 PM
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Originally Posted by joemessman
...
I'm done. Was just trying to help.
You did help, honest discussion is always worth while.

I wonder if this is somewhat of a regional problem- does fuel in some parts of the country tend to have more sulfur than in other areas?


Old 12-07-2018, 12:19 PM
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Inferno24
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Originally Posted by Gearhead Jim
You did help, honest discussion is always worth while.

I wonder if this is somewhat of a regional problem- does fuel in some parts of the country tend to have more sulfur than in other areas?
Maybe it is a "perfect storm" situation....
non use, float not moving up and down to keep contracts clean coupled with colder temps having an effect on the sitting fuel and the crap gas that is available in areas during the late fall months.


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