List of Flat-Tappet Oils - Page 34 - CorvetteForum - Chevrolet Corvette Forum Discussion



C3 Tech/Performance
V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette

List of Flat-Tappet Oils

Reply
 
 
 
Thread Tools Search this Thread
Old 06-09-2016, 06:32 PM   #661
greggome
CF Senior Member
 
Member Since: May 2009
Posts: 217
Thanked 0 Times in 0 Posts
Default

I know classiccarmotoroil.com sells oil formulated for older cars. Never tried to use it but have seen it on line occasionally.
greggome is offline   Reply With Quote
Old 06-19-2016, 09:06 AM   #662
96 lt-4
CF Senior Member
 
96 lt-4's Avatar
 
Member Since: Oct 2005
Location: Angier nc
Posts: 1,827
Thanked 16 Times in 13 Posts
Default

Quote:
Originally Posted by Logan176 View Post
So where do you guys buy your high-zinc motor oil? I used to be able to buy the Lucas Oil Hot Rod & Classic from a local auto parts store, but they recently closed and no one else around me carries the stuff. I know I can get it on Amazon, but I'd rather buy something like this from a reputable online store that only deals with automobiles.
Check with a local engine builder/machine shop/speed shop and see if they can order you what you want from one of their vendors.If not any NAPA should be able to get the Valvoline VR1 line as well.
96 lt-4 is offline   Reply With Quote
Old 08-07-2016, 06:49 PM   #663
corvetero
CF Senior Member
 
corvetero's Avatar
 
Member Since: Dec 2011
Location: Austin TX
Posts: 392
Thanked 9 Times in 8 Posts
Default

Quote:
Originally Posted by greggome View Post
How does mobil 1 5W-30W high mileage rate? I have started using this on my 68 but I have been concerned it has the zinc I need.
Quote:
Originally Posted by 63mako View Post
1000 PPM Phosphorous, 1100 PPM Zinc. http://www.mobiloil.com/USA-English/...duct_Guide.pdf
Is this good enough for a 74 L82 for street use? ZDDP is the Zinc one or Phosphorous one?

Thanks in advance.
corvetero is offline   Reply With Quote
Old 08-12-2016, 11:18 PM   #664
billla
CF Senior Member
Support Corvetteforum!
St. Jude Donor '14
Thread Starter
 
Member Since: Jun 2004
Location: Seattle WA
Posts: 6,021
Thanked 6 Times in 4 Posts
Default

Quote:
Originally Posted by corvetero View Post
Is this good enough for a 74 L82 for street use? ZDDP is the Zinc one or Phosphorous one?
ZDDP is both - dialkyldithiophosphate.

Quote:
Originally Posted by billla

Summary: If you use a flat-tappet cam run an oil from this list or another oil you're sure has at least 1000 ppm ZDDP.

Last edited by billla; 08-12-2016 at 11:19 PM.
billla is offline   Reply With Quote
Old 08-15-2016, 09:46 AM   #665
1974CorvetteJimCr
CF Senior Member
Support Corvetteforum!
 
1974CorvetteJimCr's Avatar
 
Member Since: Mar 2013
Posts: 205
Thanked 17 Times in 16 Posts
Default

Quote:
Originally Posted by greggome View Post
I know classiccarmotoroil.com sells oil formulated for older cars. Never tried to use it but have seen it on line occasionally.
The engine builder that built my new engine uses this oil on the build. After the warranty period I went to Amsoil Z-Rod.

The issue I found with the Classic Motor Oil is that it's evaporation loss is not very good at all.

What I am speaking of is NOACK Volatility Test.


The NOACK Volatility Test, otherwise known as ASTM D-5800, determines the evaporation loss of lubricants in high-temperature service. The more motor oils vaporize, the thicker and heavier they become, contributing to poor circulation, reduced fuel economy and increased oil consumption, wear and emissions.

To qualify for the API SM motor oil specification, gasoline motor oils cannot experience a weight loss of more than 15% in the NOACK test. Many current motor oils still have a hard time meeting this minimal requirement, resulting in increased wear, fuel consumption and emissions. The lower the number, the better the resistance to vaporization.
1974CorvetteJimCr is offline   Reply With Quote
Old 09-27-2016, 11:24 AM   #666
sunflower 1972
CF Senior Member
 
sunflower 1972's Avatar
 
Member Since: Sep 2016
Location: Wauconda IL
Posts: 237
Thanked 25 Times in 23 Posts
Default

Just an update concerning Castrol:




"Is the GTX Synthetic Blend 10w30 High Mileage safe to use with flat tapped engines? (1972 corvette)"




Thank you for contacting Castrol North America.

Classic cars with flat tappet cam engines represent a special case in regards to engine oil lubrication. These engines have valve train configurations that require elevated levels of zddp (zinc dialkyl dithiophosphate) anti-wear for proper protection of the flat tappet camshaft and its lifters. Insufficient concentration of zddp will lead to premature wear and failure of the camshaft and lifters. Current GF-4 and GF-5 fuel economy grade engine oils are designed for extended life of the catalytic convertors in modern passenger cars and have industry mandated limitations on the amount of sulfur and phosphorus within the oil.

Castrol always recommends following the guidelines of your manufacturer to determine the recommended grade and API specific to your application. This information can be found in your owner’s manual, or by contacting your OEM directly.


Castrol GTX High Mileage oils would not be recommended for use in a flat tappet cam engine.

Castrol EDGE SAE 5W-50 has been recently reformulated to have a boosted level of ZDDP (1250 ppm) to help protect flat tappet cam engines in classic cars. This engine oil is a full synthetic, has excellent cold temperature properties, and has a high temperature viscosity (SAE 50) that is suitable for use in many classic car applications.

Thank you again for contacting Castrol, we value your patronage!

Castrol Consumer Relations

Last edited by sunflower 1972; 09-27-2016 at 11:26 AM.
sunflower 1972 is offline   Reply With Quote
Old 09-28-2016, 01:09 AM   #667
1974CorvetteJimCr
CF Senior Member
Support Corvetteforum!
 
1974CorvetteJimCr's Avatar
 
Member Since: Mar 2013
Posts: 205
Thanked 17 Times in 16 Posts
Default NOACK Volatility Test (ASTM D-5800)

Quote:
Originally Posted by sunflower 1972 View Post
Just an update concerning Castrol:




"Is the GTX Synthetic Blend 10w30 High Mileage safe to use with flat tapped engines? (1972 corvette)"




Thank you for contacting Castrol North America.

Classic cars with flat tappet cam engines represent a special case in regards to engine oil lubrication. These engines have valve train configurations that require elevated levels of zddp (zinc dialkyl dithiophosphate) anti-wear for proper protection of the flat tappet camshaft and its lifters. Insufficient concentration of zddp will lead to premature wear and failure of the camshaft and lifters. Current GF-4 and GF-5 fuel economy grade engine oils are designed for extended life of the catalytic convertors in modern passenger cars and have industry mandated limitations on the amount of sulfur and phosphorus within the oil.

Castrol always recommends following the guidelines of your manufacturer to determine the recommended grade and API specific to your application. This information can be found in your owner’s manual, or by contacting your OEM directly.


Castrol GTX High Mileage oils would not be recommended for use in a flat tappet cam engine.

Castrol EDGE SAE 5W-50 has been recently reformulated to have a boosted level of ZDDP (1250 ppm) to help protect flat tappet cam engines in classic cars. This engine oil is a full synthetic, has excellent cold temperature properties, and has a high temperature viscosity (SAE 50) that is suitable for use in many classic car applications.

Thank you again for contacting Castrol, we value your patronage!

Castrol Consumer Relations

Can you asked them what the The NOACK Volatility Test, otherwise known as ASTM D-5800 value is for that oil?

If it's below 15% then all is good.
1974CorvetteJimCr is offline   Reply With Quote
Old 09-30-2016, 01:51 PM   #668
Mikado463
CF Senior Member
Support Corvetteforum!
 
Mikado463's Avatar
 
Member Since: Feb 2012
Location: SE Pa
Posts: 1,853
Thanked 81 Times in 73 Posts
Default

Quote:
Originally Posted by 1974CorvetteJimCr View Post
The engine builder that built my new engine uses this oil on the build. After the warranty period I went to Amsoil Z-Rod.
.
Jim, has the Amsoil Z-rod met your expectations ?
Mikado463 is offline   Reply With Quote
Old 10-01-2016, 09:21 PM   #669
1974CorvetteJimCr
CF Senior Member
Support Corvetteforum!
 
1974CorvetteJimCr's Avatar
 
Member Since: Mar 2013
Posts: 205
Thanked 17 Times in 16 Posts
Default

Quote:
Originally Posted by Mikado463 View Post
Jim, has the Amsoil Z-rod met your expectations ?
Yes it has.
1974CorvetteJimCr is offline   Reply With Quote
Old 10-02-2016, 10:10 AM   #670
Primož Krajcar
CF Senior Member
 
Member Since: Jul 2012
Location: Divaca
Posts: 239
Thanked 3 Times in 3 Posts
Default Mobil1 Peak Life 5w-50

Did anyone see Mobil 1 Peak Life 5w-50 it supposedly has 2200ppm of zddp!

http://www.mobil1.co.uk/synthetic-en...fications#tabs
Primož Krajcar is offline   Reply With Quote
Old 02-09-2017, 10:42 AM   #671
dezertc5
Junior Member
 
Member Since: Jan 2017
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
Default

I am exhausted with this thread... Don't know if it's been covered, I didn't read it all... As far as oils labeled GF3 and to some extent GF4... When the C5 in particular was built, we were in GF3 territory, and in the years leading up to the 1997 release to sale, in the prototype years, we were in GF2 territory... Whatever the limits on ZDDP were THEN, are safe limits for the oem catalyst According to GM then... So those grandstanding about M1 nowadays, as well as many other lower mandated ZDDP synthetics, be aware things have changed... We are told by the oil manufacturers and gm that dexos1 is the new standard and supercedes GM4718M... Would you really believe that? All cars and trucks from the GF3 and GF4 era are no longer under warranty... I don't believe for a minute they prioritized a decade old gen3 motors needs... I say run whatever you want and if a cat goes bad, then they're are many aftermarket cats a while lot cheaper than a rebuild.... ZDDP is still kink for AW in the right amounts... And for what it's worth, the boutique hot rod blenders are financially capitalizing on the reduction of ZDDP and making a killing... I also have worked in the chemical blending business, and lab metrology has a huge variance in data results... When you read oil analysis, be aware for the price of $18 a sample don't think you're getting ANY BETTER than a 10 percent variance... And that's highly optimistic... My met lab runs over 400 samples per day of PPT level chemistries... And we struggle with repeatability to the point the customer wants up to 10 or 15 reps of the same lot... Don't discount an oil of its 50 or even 200 ppm low... I would say also, different variations of ZDDP bind with other additives when cooked down within a dilution analysis method... The uoas and voas are a crude result of what's actually in an oil.. Oils are a blend that works as a synergistic fluid... Best bet is a data compilation of real world users and track record... Peace
dezertc5 is offline   Reply With Quote
Old 02-12-2017, 06:48 PM   #672
billla
CF Senior Member
Support Corvetteforum!
St. Jude Donor '14
Thread Starter
 
Member Since: Jun 2004
Location: Seattle WA
Posts: 6,021
Thanked 6 Times in 4 Posts
Default

Quote:
Originally Posted by dezertc5 View Post
Whatever the limits on ZDDP were THEN, are safe limits for the oem catalyst According to GM then...
I believe you may be confused as to the focus of this thread, which is specific to flat-tappet cams.
billla is offline   Reply With Quote
Old 02-12-2017, 07:11 PM   #673
dezertc5
Junior Member
 
Member Since: Jan 2017
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by billla View Post
I believe you may be confused as to the focus of this thread, which is specific to flat-tappet cams.
I understand... I do see however a large portion of this tread where C5 or C6 owners are chiming in about M1... Secondarily, a lot of other places on the forum as well... But, you're right... This is a flat tappet thread... I digress
dezertc5 is offline   Reply With Quote
Old 02-18-2017, 02:17 PM   #674
Antz81
CF Senior Member
 
Member Since: Jun 2016
Location: Auckland
Posts: 267
Thanked 37 Times in 33 Posts
Default

A lot of Penrites oils seem to have good zddp levels.
http://www.penriteoil.com.au/tech_pd...%20Summary.pdf

Not sure if it's available in the USA, but is available here in NZ and Australia.
Antz81 is offline   Reply With Quote
Go Back   CorvetteForum - Chevrolet Corvette Forum Discussion >
Reload this Page
  • List of Flat-Tappet Oils
  •  
     
    Reply

    Related Topics
    Thread Thread Starter Forum Replies Last Post
    Quaker State’s New “Defy” Motor Oil – Lab Test and Wear Test Data 540 RAT C3 Tech/Performance 20 04-27-2016 06:57 AM
    Test Data on Amsoil Break-In Oil 540 RAT C3 Tech/Performance 1 08-07-2013 05:11 PM
    Is it zinc/phos or phos/zinc in motor oil? 540 RAT C3 Tech/Performance 5 05-08-2012 08:56 PM
    AMSOIL Releases new high ZDDP Classic Car Synthetic Z-ROD Line C66 Racing Autocrossing & Roadracing 13 01-15-2012 09:43 AM
    Valvoline VR1 20W-50 Pike1968 C3 Tech/Performance 30 03-02-2011 09:37 PM


    Tags
    0w40, 1030, 5w40, acessesories, btwn, c3, corvette, legal, mobil1, not, oil, purple, racing, royal, shootout, specialty, street, truck, valvoline

    Thread Tools Search this Thread
    Search this Thread:

    Click for Advanced Search

    Posting Rules
    You may not post new threads
    You may not post replies
    You may not post attachments
    You may not edit your posts

    BB code is On
    Smilies are On
    [IMG] code is On
    HTML code is Off
    Trackbacks are Off
    Pingbacks are Off
    Refbacks are Off

    Forum Jump


    All times are GMT -4. The time now is 12:45 AM.


     
    • Ask a Question
      Get answers from community experts
    Question Title:
    Description:
    Your question will be posted in: