Home » Public Forums » GMCnet » [GMCnet] Dino Oil Break Down Temperature
| [GMCnet] Dino Oil Break Down Temperature [message #189819] |
Sat, 10 November 2012 17:18  |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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G'day,
When I read Paul's email below I was stunned too!
IIRC doesn't dino oil begin to breakdown / loose lubricating properties at around 260° F?
Regards,
Rob M.
USAussie - Downunder
-----Original Message-----
From: Paul Leavitt
I put an Oil Temp gage on the Caddy in the extra port on the dual remote. Was stunned at how hot it was. over 300. But its been a
while,,,,still no dash,,,,,PL
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] Dino Oil Break Down Temperature [message #189820 is a reply to message #189819] |
Sat, 10 November 2012 17:33  |
Larry
Messages: 2875
Registered: January 2004
Location: Menomonie, WI
Karma: 10
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Rob,
What thread did you get the PL quote from?
| Robert Mueller wrote on Sat, 10 November 2012 17:18 |
G'day,
When I read Paul's email below I was stunned too!
IIRC doesn't dino oil begin to breakdown / loose lubricating properties at around 260° F?
Regards,
Rob M.
USAussie - Downunder
-----Original Message-----
From: Paul Leavitt
I put an Oil Temp gage on the Caddy in the extra port on the dual remote. Was stunned at how hot it was. over 300. But its been a
while,,,,still no dash,,,,,PL
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Larry 
78 Royale w/500 Caddy
Menomonie, WI.
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| Re: [GMCnet] Dino Oil Break Down Temperature [message #189836 is a reply to message #189819] |
Sat, 10 November 2012 19:09 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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| Robert Mueller wrote on Sat, 10 November 2012 18:18 |
G'day,
When I read Paul's email below I was stunned too!
IIRC doesn't dino oil begin to breakdown / loose lubricating properties at around 260° F?
Regards,
-----Original Message-----
From: Paul Leavitt
I put an Oil Temp gage on the Caddy in the extra port on the dual remote. Was stunned at how hot it was. over 300. But its been a while,,,,still no dash,,,,,PL
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Rob,
No....
Standard dino oils are good to 305°F. But, 300°F is too high. If an oil molecule get heated to 305°F, it ceases to be lube oil - right then - there is no cooking time here. So, if he is seeing that, then places that are seeing oil primarily as a coolant - Like the undersides of piston crowns - will be destroying any lube oil that get there.
I couldn't find the PL posting.
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
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| Re: [GMCnet] Dino Oil Break Down Temperature [message #189842 is a reply to message #189836] |
Sat, 10 November 2012 19:25 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Matt,
Thanks, the temp I found through Google was all over the place and as low as 240°F. The 260° was what I recalled from my hot rodding
days in the 1960's. Perhaps it was correct for dino oil at that time, irrelevant at this point in time, however.
Paul's email was in: Re: [GMCnet] Fluctuating Oil Gauge Readings
Regards,
Rob M.
USAussie - Downunder
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Matt Colie
Rob,
No....
Standard dino oils are good to 305°F. But, 300°F is too high. If an oil molecule get heated to 305°F, it ceases to be lube oil -
right then - there is no cooking time here. So, if he is seeing that, then places that are seeing oil primarily as a coolant - Like
the undersides of piston crowns - will be destroying any lube oil that get there.
I couldn't find the PL posting.
Matt
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] Dino Oil Break Down Temperature [message #189877 is a reply to message #189842] |
Sun, 11 November 2012 13:01 |
roy1
Messages: 2126
Registered: July 2004
Location: Minden nevada
Karma: 6
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| Robert Mueller wrote on Sat, 10 November 2012 17:25 |
Matt,
Thanks, the temp I found through Google was all over the place and as low as 240°F. The 260° was what I recalled from my hot rodding
days in the 1960's. Perhaps it was correct for dino oil at that time, irrelevant at this point in time, however.
Paul's email was in: Re: [GMCnet] Fluctuating Oil Gauge Readings
Regards,
Rob M.
USAussie - Downunder
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Matt Colie
Rob,
No....
Standard dino oils are good to 305°F. But, 300°F is too high. If an oil molecule get heated to 305°F, it ceases to be lube oil -
right then - there is no cooking time here. So, if he is seeing that, then places that are seeing oil primarily as a coolant - Like
the undersides of piston crowns - will be destroying any lube oil that get there.
I couldn't find the PL posting.
Matt
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Keep in mind the stock crank shaft seal is only rated to 250 degrees much higher and you will end up with a leaky seal. Which is why I used a higher temperature rated seal and an external oil cooler in series with the cooler in the Aluminum radiator.
Roy Keen
Minden,NV
76 X Glenbrook
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