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Oil Change [message #225640] Mon, 14 October 2013 16:26 Go to next message
Bruce Hart is currently offline  Bruce Hart   United States
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Location: La Grange, Wyoming
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Just a passing thought to the community. When changing out the engine oil there is the extra quart that stays in the upper portion of the oil pan. After draining the hot oil out and by adding a quart of oil at room temp would flow down to the front of the oil pan and displace some if not most of the oil left in the upper portion of the pan. Would the cooler oil sink and cause the hotter oil to flow over into the side of pan with the drain? I am sure at some point that the temperature difference would be null.

Bruce Hart 1976 Palm Beach 1977 28' Kingsley La Grange, Wyoming
Re: [GMCnet] Oil Change [message #225644 is a reply to message #225640] Mon, 14 October 2013 16:56 Go to previous messageGo to next message
Emery Stora is currently offline  Emery Stora   United States
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I am not sure that the quart you put in would flow down the front of the pan.

EmeryvStora

On Oct 14, 2013, at 3:26 PM, Bruce Hart <hartsgmc@gmail.com> wrote:

>
>
> Just a passing thought to the community. When changing out the engine oil there is the extra quart that stays in the upper portion of the oil pan. After draining the hot oil out and by adding a quart of oil at room temp would flow down to the front of the oil pan and displace some if not most of the oil left in the upper portion of the pan. Would the cooler oil sink and cause the hotter oil to flow over into the side of pan with the drain? I am sure at some point that the temperature difference would be null.
> --
> Bruce Hart
> 1976 Palm Beach
> Milliken, Co
> _______________________________________________
> GMCnet mailing list
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Re: [GMCnet] Oil Change [message #225650 is a reply to message #225644] Mon, 14 October 2013 17:41 Go to previous messageGo to next message
Bruce Hart is currently offline  Bruce Hart   United States
Messages: 1501
Registered: October 2011
Location: La Grange, Wyoming
Karma: 5
Senior Member
When you add oil from the front doesn't it passes over the timing gears and
drains into the front end of oil pan?


On Mon, Oct 14, 2013 at 3:56 PM, Emery Stora <emerystora@me.com> wrote:

> I am not sure that the quart you put in would flow down the front of the
> pan.
>
> EmeryvStora
>
> On Oct 14, 2013, at 3:26 PM, Bruce Hart <hartsgmc@gmail.com> wrote:
>
> >
> >
> > Just a passing thought to the community. When changing out the engine
> oil there is the extra quart that stays in the upper portion of the oil
> pan. After draining the hot oil out and by adding a quart of oil at room
> temp would flow down to the front of the oil pan and displace some if not
> most of the oil left in the upper portion of the pan. Would the cooler oil
> sink and cause the hotter oil to flow over into the side of pan with the
> drain? I am sure at some point that the temperature difference would be
> null.
> > --
> > Bruce Hart
> > 1976 Palm Beach
> > Milliken, Co
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>



--
Bruce Hart
1976 Palm Beach
Milliken, Co
GMC=Got More Class
51st State? Northern Colorado!
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Bruce Hart 1976 Palm Beach 1977 28' Kingsley La Grange, Wyoming
Re: [GMCnet] Oil Change [message #225651 is a reply to message #225650] Mon, 14 October 2013 17:49 Go to previous messageGo to next message
Emery Stora is currently offline  Emery Stora   United States
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Registered: January 2011
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Senior Member
I don't know which is why I said that "I am not sure".

Emery Stora

On Oct 14, 2013, at 4:41 PM, Bruce Hart <hartsgmc@gmail.com> wrote:

> When you add oil from the front doesn't it passes over the timing gears and
> drains into the front end of oil pan?
>
>
> On Mon, Oct 14, 2013 at 3:56 PM, Emery Stora <emerystora@me.com> wrote:
>
>> I am not sure that the quart you put in would flow down the front of the
>> pan.
>>
>> EmeryvStora
>>
>> On Oct 14, 2013, at 3:26 PM, Bruce Hart <hartsgmc@gmail.com> wrote:
>>
>>>
>>>
>>> Just a passing thought to the community. When changing out the engine
>> oil there is the extra quart that stays in the upper portion of the oil
>> pan. After draining the hot oil out and by adding a quart of oil at room
>> temp would flow down to the front of the oil pan and displace some if not
>> most of the oil left in the upper portion of the pan. Would the cooler oil
>> sink and cause the hotter oil to flow over into the side of pan with the
>> drain? I am sure at some point that the temperature difference would be
>> null.
>>> --
>>> Bruce Hart
>>> 1976 Palm Beach
>>> Milliken, Co
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
>
>
> --
> Bruce Hart
> 1976 Palm Beach
> Milliken, Co
> GMC=Got More Class
> 51st State? Northern Colorado!
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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Re: Oil Change [message #225655 is a reply to message #225640] Mon, 14 October 2013 18:41 Go to previous messageGo to next message
Wander Inn is currently offline  Wander Inn   United States
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Registered: January 2010
Location: Phoenix Az.
Karma: 0
Senior Member
Try leaving the drain plug out when adding oil, see if the
oil clean or dirty.

Mike


Mike & Chris Hughes 1977 Kingsley Phoenix, Az.
Re: [GMCnet] Oil Change [message #225658 is a reply to message #225655] Mon, 14 October 2013 18:49 Go to previous messageGo to next message
Bruce Hart is currently offline  Bruce Hart   United States
Messages: 1501
Registered: October 2011
Location: La Grange, Wyoming
Karma: 5
Senior Member
When I removed the oil plug again it did look dirty, but that could have
been a mixture of clean and used.



On Mon, Oct 14, 2013 at 5:41 PM, Mike & Chris Hughes <whose1938@gmail.com>wrote:

>
>
> Try leaving the drain plug out when adding oil, see if the
> oil clean or dirty.
>
> Mike
>
> --
> Mike & Chris Hughes
> 1977 Kingsley
>
> Phoenix, Az.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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>



--
Bruce Hart
1976 Palm Beach
Milliken, Co
GMC=Got More Class
51st State? Northern Colorado!
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Bruce Hart 1976 Palm Beach 1977 28' Kingsley La Grange, Wyoming
Re: Oil Change [message #225672 is a reply to message #225640] Mon, 14 October 2013 19:29 Go to previous messageGo to next message
Matt Colie is currently offline  Matt Colie   United States
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Registered: March 2007
Location: S.E. Michigan
Karma: 7
Senior Member
Bruce Hart wrote on Mon, 14 October 2013 17:26

Just a passing thought to the community. When changing out the engine oil there is the extra quart that stays in the upper portion of the oil pan. After draining the hot oil out and by adding a quart of oil at room temp would flow down to the front of the oil pan and displace some if not most of the oil left in the upper portion of the pan. Would the cooler oil sink and cause the hotter oil to flow over into the side of pan with the drain? I am sure at some point that the temperature difference would be null.

Bruce,

That is real good thing to not worry about.

There is also most of a quart that doesn't drain out of the heads, lifters, rockers, balance holes, not to mention the lube oil cooler. In engine building, this is called oil hang up and it causes no problems in most all engines. (Except in test labs that are trying to do precise lube oil consumption testing.) Our engines just have more that we know about because it is in one place.

Matt


Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
Re: Oil Change [message #225692 is a reply to message #225640] Mon, 14 October 2013 21:29 Go to previous messageGo to next message
JohnL455 is currently offline  JohnL455   United States
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Registered: October 2006
Location: Woodstock, IL
Karma: 12
Senior Member
Also as soon as the drain stream becomes 'punctuated' the plug and new pre filled filter go back on Since there will be more than normal dry time at startup, I want that residual film still present at first restart without a long drain down time. I disagree with leaving the plug out overnite to get out 'more' as some do on their vehicles. As Matt said it's still puddled in the low spots. Adding 5 quarts with the '1 dirty qt in the pan' it is so clean on the stick it's hard to read for the first few hundred miles. If there is a severe sludging problem, the pan would have to come off to properly clean out. My engine from the PO was that way and multiple changes didn't get it out till tear down where we scraped a pint of sludge out. Same theory with coolant. Just drain and fill every 2 years and the new will dilute the remaining old still in there and refresh the additives in the system.

John Lebetski
Woodstock, IL
77 Eleganza II
Re: [GMCnet] Oil Change [message #225712 is a reply to message #225640] Tue, 15 October 2013 07:51 Go to previous messageGo to next message
Steven Ferguson is currently offline  Steven Ferguson   United States
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Registered: May 2006
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Senior Member
I did that for years on my GMC. Usually took a quart to get clean to start
draining out of the pan.
Steve F.


On Mon, Oct 14, 2013 at 2:26 PM, Bruce Hart <hartsgmc@gmail.com> wrote:

>
>
> Just a passing thought to the community. When changing out the engine oil
> there is the extra quart that stays in the upper portion of the oil pan.
> After draining the hot oil out and by adding a quart of oil at room temp
> would flow down to the front of the oil pan and displace some if not most
> of the oil left in the upper portion of the pan. Would the cooler oil sink
> and cause the hotter oil to flow over into the side of pan with the drain?
> I am sure at some point that the temperature difference would be null.
> --
> Bruce Hart
> 1976 Palm Beach
> Milliken, Co
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>



--
Take care,
Steve
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Re: [GMCnet] Oil Change [message #225812 is a reply to message #225712] Wed, 16 October 2013 01:30 Go to previous messageGo to next message
Bruce Hart is currently offline  Bruce Hart   United States
Messages: 1501
Registered: October 2011
Location: La Grange, Wyoming
Karma: 5
Senior Member
Thanks for the input.


On Tue, Oct 15, 2013 at 6:51 AM, botiemad . <botiemad11@gmail.com> wrote:

> I did that for years on my GMC. Usually took a quart to get clean to start
> draining out of the pan.
> Steve F.
>
>
> On Mon, Oct 14, 2013 at 2:26 PM, Bruce Hart <hartsgmc@gmail.com> wrote:
>
> >
> >
> > Just a passing thought to the community. When changing out the engine
> oil
> > there is the extra quart that stays in the upper portion of the oil pan.
> > After draining the hot oil out and by adding a quart of oil at room temp
> > would flow down to the front of the oil pan and displace some if not most
> > of the oil left in the upper portion of the pan. Would the cooler oil
> sink
> > and cause the hotter oil to flow over into the side of pan with the
> drain?
> > I am sure at some point that the temperature difference would be null.
> > --
> > Bruce Hart
> > 1976 Palm Beach
> > Milliken, Co
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> >
>
>
>
> --
> Take care,
> Steve
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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>



--
Bruce Hart
1976 Palm Beach
Milliken, Co
GMC=Got More Class
51st State? Northern Colorado!
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Bruce Hart 1976 Palm Beach 1977 28' Kingsley La Grange, Wyoming
Re: [GMCnet] Oil Change [message #225813 is a reply to message #225812] Wed, 16 October 2013 01:36 Go to previous message
Bruce Hart is currently offline  Bruce Hart   United States
Messages: 1501
Registered: October 2011
Location: La Grange, Wyoming
Karma: 5
Senior Member
It seems that one could remove most of the oil from the front of the oil
pan without putting in the extra drain plug. It would also require the
same 6 quarts of oil to be put back in if one did have the front oil plug.

On Wed, Oct 16, 2013 at 12:30 AM, Bruce Hart <hartsgmc@gmail.com> wrote:

> Thanks for the input.
>
>
> On Tue, Oct 15, 2013 at 6:51 AM, botiemad . <botiemad11@gmail.com> wrote:
>
>> I did that for years on my GMC. Usually took a quart to get clean to
>> start
>> draining out of the pan.
>> Steve F.
>>
>>
>> On Mon, Oct 14, 2013 at 2:26 PM, Bruce Hart <hartsgmc@gmail.com> wrote:
>>
>> >
>> >
>> > Just a passing thought to the community. When changing out the engine
>> oil
>> > there is the extra quart that stays in the upper portion of the oil pan.
>> > After draining the hot oil out and by adding a quart of oil at room temp
>> > would flow down to the front of the oil pan and displace some if not
>> most
>> > of the oil left in the upper portion of the pan. Would the cooler oil
>> sink
>> > and cause the hotter oil to flow over into the side of pan with the
>> drain?
>> > I am sure at some point that the temperature difference would be null.
>> > --
>> > Bruce Hart
>> > 1976 Palm Beach
>> > Milliken, Co
>> > _______________________________________________
>> > GMCnet mailing list
>> > Unsubscribe or Change List Options:
>> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>> >
>>
>>
>>
>> --
>> Take care,
>> Steve
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>>
>
>
>
> --
> Bruce Hart
> 1976 Palm Beach
> Milliken, Co
> GMC=Got More Class
> 51st State? Northern Colorado!
>



--
Bruce Hart
1976 Palm Beach
Milliken, Co
GMC=Got More Class
51st State? Northern Colorado!
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Bruce Hart 1976 Palm Beach 1977 28' Kingsley La Grange, Wyoming
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