Home » Public Forums » GMCnet » Re: [GMCnet] Oil temp sender location
| Re: [GMCnet] Oil temp sender location [message #299254] |
Mon, 18 April 2016 13:32  |
Tom Whitton
Messages: 235
Registered: February 2004
Location: Paducah, KY
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Do you guys see any problem with installing the oil temp sender in the oil drain plug? I'm thinking the extra plug that I had put in the upper valley.
Right now I have the sender mounted in the oil filter adapter. Mounted there, it's not unusual to see temps of 260 degrees. Here's something Chuck Aulgur sent me a while back on the his experience. I don't want to remove the pan to have a sender mounting put in so I'm thinking the upper oil drain plug as an alternative.
Chuck Aulgur's experience:
"A few years back I also mounted the sending unit for an oil temp gauge in the oil filter adapter, measuring the oil temp leaving the engine. I also found my oil temp ran around 260 degrees F with a normal engine load on my 455 engine in a 76 Royale. I became very concerned an spent a lot of money for an auxiliary engine oil cooler. At the same time I put on several "Westac" gauges. They mounted the sending unit for the engine oil temp in my drain plug (only charged 5$ above the normal
sending unit price).
I calibrated all my temp gauges in cooking oil before I put them in. What I found out was I spent a lot of money for the auxiliary oil cooler that I probably didn't need. I still have the temp gauge in the oil filter adapter and it normally runs from 40 to 60 degrees F higher than the oil pan temp. I also have another oil temp gauge in oil filter adapter measuring the oil temp coming from my auxiliary cooler. During normal operations the oil is cooled about 40 to 50 degrees F going through the cooler. My oil temp measured in the oil pan drain plug never gets more than about 15 degrees above the engine coolant temp under max load conditions.
Based on my experience with an oil temp sending unit mounted in the oil filter adapter, your 260 degrees F coming out of the engine is about normal."
Tom Whitton
26 foot updated GMC
Paducah, KY
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| Re: [GMCnet] Oil temp sender location [message #299275 is a reply to message #299254] |
Tue, 19 April 2016 01:31  |
appie
Messages: 902
Registered: April 2013
Location: denmark
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Nobody? Been wondering about the same question
Appie
eleganza 76 "Olga" now sadly sold
6 wheel discbrake
Quadrabags
Springfield stage 2 462 olds
Manny tranny
( pictures at http://www.gmcmhphotos.com/photos/g6489-olga.html
Fulltiming in Europe july 2014 til july 2016
Denmark
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| Re: [GMCnet] Oil temp sender location [message #299276 is a reply to message #299254] |
Tue, 19 April 2016 09:04 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
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I monitor trans temp with my DigiPanel, by clamping the sensor on the line to the cooler. Works fine, ought to work for the oil lines if you have that type sensor.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: [GMCnet] Oil temp sender location [message #299277 is a reply to message #299276] |
Tue, 19 April 2016 09:16 |
James Hupy
Messages: 6806
Registered: May 2010
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Way I see it, coach ran fine before it had any sending unit, no matter
where a human decided to install it. NOW WE GO AND ADD ANGST AND GUILT AND
WORRY INTO THE EQUATION. FORGETABOUTIT. Install it where it gives you the
most peace of mind. In my case, it would be the drawer where I keep all my
spare diagnostic sensors. Your installation location may vary. (VBG.)
Jim Hupy
Salem, Or
78 GMC ROYALE 403. (Extra gages include Tach, Vacuum, Trans temp w/sender
in Ragusa pan, and final drive temp with sender in cover.)
On Apr 19, 2016 7:05 AM, "Johnny Bridges via Gmclist" <
gmclist@list.gmcnet.org> wrote:
> I monitor trans temp with my DigiPanel, by clamping the sensor on the line
> to the cooler. Works fine, ought to work for the oil lines if you have
> that type sensor.
>
> --johnny
> --
> '76 23' transmode Norris upfit
> Braselton, Ga.
>
> "Sometimes I wonder what tomorrow's gonna bring when I think about my
> dirty life and times" --Warren Zevon
>
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| Re: [GMCnet] Oil temp sender location [message #299278 is a reply to message #299277] |
Tue, 19 April 2016 10:05 |
Neil
Messages: 271
Registered: July 2007
Location: Los Angeles and Magalia, ...
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If you plumbed it into a tee up high by the filter adapter you may experience very high readings which have little to do with oil temperature. I plumbed mine there at first. The oil would get hot and keep getting hotter. I kept adding coolers, made no difference. I finally figured out it was picking up heat from the headers and moved the temp sensor elsewhere. Problem solved, excess coolers removed.
Neil
76 Eleganza now sold
Los Angeles
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| Re: [GMCnet] Oil temp sender location [message #299280 is a reply to message #299254] |
Tue, 19 April 2016 11:43 |
Tom Whitton
Messages: 235
Registered: February 2004
Location: Paducah, KY
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Thanks gentlemen. Opinions definitely vary on the need for monitoring oil temp. Being a belt and suspenders man, I agree with everyone but, at least for now, prefer to see the temp while on the road. The engine still isn't broken in from the rebuild. If temp is too high I want to know. After the break-in I probably won't pay much attention.
Anyway, I didn't hear any technical reasons for not installing the sender in the oil drain plug so I'm going to give it a try. It wouldn't be worth it to remove the pan to install a bung (think that's what it's called).
Thanks for the input,
Tom Whitton
26 foot updated GMC
Paducah, KY
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| Re: [GMCnet] Oil temp sender location [message #299281 is a reply to message #299280] |
Tue, 19 April 2016 12:00 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Tom, I was being kinda "smart ass" about my response. But, I know that
there are drain plug sending units that take the place of existing plugs.
They serve their purpose well. I had one in a VW Kombi oil drain for many
years. It served to scare me a number of times climbing mountain passes in
Aug/Sept. But, what they do provide, no matter where they are located, is a
comparison that serves to alert us when it gets out of what we observe as a
normal range. What we choose to do with that information is going to vary.
We might pull over and wait until the oil cools off, we might pull the
dipstick and check if there is any oil in the system, we might ignore it
thinking that all is well, and so on. We might worry unnecessarily about
excessive temperatures, We might take our eyes off the road for those
critical few seconds that use up all the stopping distance between us 'n
them.
Jim Hupy
Salem, OR
78 GMC Royale 403
On Tue, Apr 19, 2016 at 9:43 AM, Tom Whitton
wrote:
> Thanks gentlemen. Opinions definitely vary on the need for monitoring oil
> temp. Being a belt and suspenders man, I agree with everyone but, at least
> for now, prefer to see the temp while on the road. The engine still isn't
> broken in from the rebuild. If temp is too high I want to know. After the
> break-in I probably won't pay much attention.
>
> Anyway, I didn't hear any technical reasons for not installing the sender
> in the oil drain plug so I'm going to give it a try. It wouldn't be worth
> it to remove the pan to install a bung (think that's what it's called).
>
> Thanks for the input,
>
> Tom Whitton
> 26 foot updated GMC
> Paducah, KY
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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| Re: [GMCnet] Oil temp sender location [message #299282 is a reply to message #299254] |
Tue, 19 April 2016 13:08 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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The DigiPanel is Your Friend in that it squalls at you if either of the temps or voltage gets out of hand.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: [GMCnet] Oil temp sender location [message #299322 is a reply to message #299254] |
Wed, 20 April 2016 13:44 |
Tom Whitton
Messages: 235
Registered: February 2004
Location: Paducah, KY
Karma: 0
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Jim,
No problem with your response. There was a lot of truth to it. I always appreciate your input. You've got a lot of experience with GMC's and that can't be beat. I'm going to drill and tap the pan drain plug to accept a 1/8" pipe thread oil temp sender.
Hope you have about recovered from your heart valve surgery.
Tom Whitton
26 foot updated GMC
Paducah, KY
Date: Tue, 19 Apr 2016 10:00:31 -0700
From: James Hupy
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] Oil temp sender location
Message-ID:
Content-Type: text/plain; charset=UTF-8
Tom, I was being kinda "smart ass" about my response. But, I know that
there are drain plug sending units that take the place of existing plugs.
They serve their purpose well. I had one in a VW Kombi oil drain for many
years. It served to scare me a number of times climbing mountain passes in
Aug/Sept. But, what they do provide, no matter where they are located, is a
comparison that serves to alert us when it gets out of what we observe as a
normal range. What we choose to do with that information is going to vary.
We might pull over and wait until the oil cools off, we might pull the
dipstick and check if there is any oil in the system, we might ignore it
thinking that all is well, and so on. We might worry unnecessarily about
excessive temperatures, We might take our eyes off the road for those
critical few seconds that use up all the stopping distance between us 'n
them.
Jim Hupy
Salem, OR
78 GMC Royale 403
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| Re: [GMCnet] Oil temp sender location [message #299532 is a reply to message #299254] |
Sat, 23 April 2016 09:17 |
Tom Whitton
Messages: 235
Registered: February 2004
Location: Paducah, KY
Karma: 0
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Johnny,
I'm not familiar with a sender that works by clamping to a line. Could you send a link to a web site or a picture? I'm about to install the temp sender in the auxillary oil drain plug but am open to a better idea.
Thanks,
Tom Whitton
26 foot updated GMC
Paducah, KY
Message: 10
Date: Tue, 19 Apr 2016 08:04:04 -0600
From: Johnny Bridges
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] Oil temp sender location
Message-ID:
Content-Type: text/plain; charset="utf-8"
I monitor trans temp with my DigiPanel, by clamping the sensor on the line to the cooler. Works fine, ought to work for the oil lines if you have
that type sensor.
--johnny
--
'76 23' transmode Norris upfit
Braselton, Ga.
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| Re: [GMCnet] Oil temp sender location [message #299533 is a reply to message #299254] |
Sat, 23 April 2016 09:22 |
Tom Whitton
Messages: 235
Registered: February 2004
Location: Paducah, KY
Karma: 0
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Neil,
Where did you relocate your sensor?
Thanks,
Tom Whitton
26 foot updated GMC
Paducah, KY
Message: 12
Date: Tue, 19 Apr 2016 09:05:37 -0600
From: Neil Martin
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] Oil temp sender location
Message-ID:
Content-Type: text/plain; charset="utf-8"
If you plumbed it into a tee up high by the filter adapter you may experience very high readings which have little to do with oil temperature. I
plumbed mine there at first. The oil would get hot and keep getting hotter. I kept adding coolers, made no difference. I finally figured out it was
picking up heat from the headers and moved the temp sensor elsewhere. Problem solved, excess coolers removed.
--
Neil
76 Eleganza
Los Angeles
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