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1953 Corvette engine oil specifications. #5123295
06/02/19 07:01 PM
06/02/19 07:01 PM
Joined: Feb 2013
Posts: 434
Illinois, USA
79sunrunner Offline OP
79sunrunner  Offline OP

Joined: Feb 2013
Posts: 434
Illinois, USA
Oddly 20 weight is specified for summer temperatures. I remembered my friends '54 Chevy Special also recommended 20 weight for summer. I wonder if this is still the correct viscosity of oil for these engines today? At least in good condition engines such as 5w20. Also note British manufactures such as Jaguar and MG suggested 30 and 40 weight for +32F and +80F weather.



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Re: 1953 Corvette engine oil specifications. [Re: 79sunrunner] #5123303
06/02/19 07:08 PM
06/02/19 07:08 PM
Joined: Jun 2003
Posts: 19,178
Apple Valley, California
Chris142 Offline
Chris142  Offline

Joined: Jun 2003
Posts: 19,178
Apple Valley, California
My uncle worked for Gulf oil way back then. He said to Run sae20 until consumption went up,then sae30 then once to sae40 a rebuild was due


02 Wrangler traveler sae30
87 F250 Valvoline 15w40
07 fjcruiser Chevron 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor Chevron sae30
Re: 1953 Corvette engine oil specifications. [Re: 79sunrunner] #5123306
06/02/19 07:12 PM
06/02/19 07:12 PM
Joined: Dec 2009
Posts: 27,760
Regina, Saskatchewan, Canada
Garak Offline
Garak  Offline

Joined: Dec 2009
Posts: 27,760
Regina, Saskatchewan, Canada
The HTHS of a monograde 20 might be a bit higher than the 5w-20 and 0w-20 ILSAC options we see today.


Plain, simple Garak.

2008 Infiniti G37 - Shell ROTELLA T6 Multi-Vehicle 5w-30, Wix 57356
1984 F-150 4.9L - Quaker State GB 10w-30, Wix 51515
Re: 1953 Corvette engine oil specifications. [Re: 79sunrunner] #5123307
06/02/19 07:12 PM
06/02/19 07:12 PM
Joined: Feb 2014
Posts: 170
ga
faltic Offline
faltic  Offline

Joined: Feb 2014
Posts: 170
ga
Interesting


--------------------------------
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07 EX250 21k+
09 EN500 11k+
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Re: 1953 Corvette engine oil specifications. [Re: 79sunrunner] #5123312
06/02/19 07:15 PM
06/02/19 07:15 PM
Joined: Mar 2008
Posts: 6,250
South Florida
bubbatime Offline
bubbatime  Offline

Joined: Mar 2008
Posts: 6,250
South Florida
I would not run 5W20 in it.

Id run 15W40 heavy duty engine oil in it. You wont find any roller camshaft or roller rockers in that thing... all flat tappet stuff.


17 Chrysler Pacifica Edge Syn 5W30
13 Yamaha XT250 Valv MC 10W40
10 Acura TSX 2.4 Edge 0W40
06 GMC Sierra SuperTech 10W30


Re: 1953 Corvette engine oil specifications. [Re: 79sunrunner] #5123320
06/02/19 07:23 PM
06/02/19 07:23 PM
Joined: Jan 2010
Posts: 1,694
Los Gatos, CA
JeffKeryk Offline
JeffKeryk  Offline

Joined: Jan 2010
Posts: 1,694
Los Gatos, CA
Blue Flame 6 cylinder and 2 speed auto.


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Re: 1953 Corvette engine oil specifications. [Re: 79sunrunner] #5123327
06/02/19 07:28 PM
06/02/19 07:28 PM
Joined: Aug 2003
Posts: 2,479
Naperville, IL
wwillson Offline
Administrator
wwillson  Offline
Administrator

Joined: Aug 2003
Posts: 2,479
Naperville, IL
John Deere tractor manuals from the 1960s had similar viscosity recommendations.

Re: 1953 Corvette engine oil specifications. [Re: 79sunrunner] #5123329
06/02/19 07:29 PM
06/02/19 07:29 PM
Joined: Oct 2004
Posts: 9,136
Cincinnati, OH, USA
bullwinkle Offline
bullwinkle  Offline

Joined: Oct 2004
Posts: 9,136
Cincinnati, OH, USA
5W20 would be a bit thinner & more shear prone than SAE 20-but it would work a lot better in cold weather. I would (like said above) 15W40 or straight SAE 30 HDEO in it-zero emissions equipment, not even a PCV valve, and a little lead substitute in the fuel wouldn't hurt anything either, due to the non-hardened valve seats.


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Re: 1953 Corvette engine oil specifications. [Re: Garak] #5123330
06/02/19 07:30 PM
06/02/19 07:30 PM
Joined: Jul 2017
Posts: 959
WA
OilUzer Offline
OilUzer  Offline

Joined: Jul 2017
Posts: 959
WA
Originally Posted by Garak
The HTHS of a monograde 20 might be a bit higher than the 5w-20 and 0w-20 ILSAC options we see today.


Good point.
Monogrades don't have any vii either. Isn't that true?

Re: 1953 Corvette engine oil specifications. [Re: 79sunrunner] #5123337
06/02/19 07:39 PM
06/02/19 07:39 PM
Joined: Jan 2009
Posts: 14,240
Illinois
tig1 Offline
tig1  Offline

Joined: Jan 2009
Posts: 14,240
Illinois
I used Valvo 20wt in the late 60's and early 70's.


2007 Ford Fusion 245,000 miles
M1 5-20HM
2017 Ford Fusion 73K
M1 0-20EP
10,000 mile OCIs on both engines
M1 ATF and Valvoline LV
M1 10-30 in all OPE
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Re: 1953 Corvette engine oil specifications. [Re: 79sunrunner] #5123339
06/02/19 07:42 PM
06/02/19 07:42 PM
Joined: Jul 2011
Posts: 237
NY
rfeir Offline
rfeir  Offline

Joined: Jul 2011
Posts: 237
NY
Oil today is nothing like the oil offered back in 53. I have a 59 and run 0W-40 European Formula Mobil 1.
The Car is used infrequently and runs great on this modern oil. No sludge, no varnish and it starts quickly.
I take it to the redline with no effort.


RPF
Re: 1953 Corvette engine oil specifications. [Re: OilUzer] #5123356
06/02/19 08:01 PM
06/02/19 08:01 PM
Joined: Dec 2009
Posts: 27,760
Regina, Saskatchewan, Canada
Garak Offline
Garak  Offline

Joined: Dec 2009
Posts: 27,760
Regina, Saskatchewan, Canada
Originally Posted by OilUzer
Monogrades don't have any vii either. Isn't that true?

Yes. SAE 20 and 20w-20 were common recommendations at one time.


Plain, simple Garak.

2008 Infiniti G37 - Shell ROTELLA T6 Multi-Vehicle 5w-30, Wix 57356
1984 F-150 4.9L - Quaker State GB 10w-30, Wix 51515
Re: 1953 Corvette engine oil specifications. [Re: OilUzer] #5123381
06/02/19 08:24 PM
06/02/19 08:24 PM
Joined: Mar 2006
Posts: 6,156
Buffalo, NY
Nickdfresh Offline
Nickdfresh  Offline

Joined: Mar 2006
Posts: 6,156
Buffalo, NY
Originally Posted by OilUzer
Originally Posted by Garak
The HTHS of a monograde 20 might be a bit higher than the 5w-20 and 0w-20 ILSAC options we see today.


Good point.
Monogrades don't have any vii either. Isn't that true?


They were 1950's Group I oils with almost no additive pack. Do you think they're anywhere near the full syn 20W's of today?

Re: 1953 Corvette engine oil specifications. [Re: Nickdfresh] #5123395
06/02/19 08:38 PM
06/02/19 08:38 PM
Joined: Dec 2009
Posts: 27,760
Regina, Saskatchewan, Canada
Garak Offline
Garak  Offline

Joined: Dec 2009
Posts: 27,760
Regina, Saskatchewan, Canada
The additive pack today will be much better, but the viscosity won't be there. I would suggest one jump a grade, or track down a modern SAE 20 or 20w-20, if such can be found. Castrol had the last 20w-20 I saw, just a few years ago.


Plain, simple Garak.

2008 Infiniti G37 - Shell ROTELLA T6 Multi-Vehicle 5w-30, Wix 57356
1984 F-150 4.9L - Quaker State GB 10w-30, Wix 51515
Re: 1953 Corvette engine oil specifications. [Re: 79sunrunner] #5123399
06/02/19 08:39 PM
06/02/19 08:39 PM
Joined: Mar 2015
Posts: 222
MO
Carbon12 Offline
Carbon12  Offline

Joined: Mar 2015
Posts: 222
MO
I remember reading somewhere that SAE 20 has an HTHS near 3.0-3.1 cP which is similar to modern ILSAC 5w30 or 10w30.

Old tractors have similar viscosity/temperature charts. I have 52 Farmall Super C and I use Rotella 10w30. HTHS of 3.5 (near most SAE 30's) yet would be much better in cold weather. Higher ZDDP too.

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