The Stovebolt Page Forums Home | FAQ | Forum | Swap Meet | Gallery | Tech Tips | Events | Features | Search | Hoo-Ya Shop
Helping out ...


EVENTS

Check in for status!

Jump over to the Events Forum, to post events -- new ones or the ones we have been enjoying for some time.
Look to see what's been cancelled or postponed.

Encourage one another!

Stovebolt Site Search
 
Old Truck Calendars
Months of truck photos!
Nothing like an old truck calendar

Stovebolt Calendars

Check for details!


Who's Online Now
15 members (49nut, 52Mark, 2ManyTrucks, bluesman, AwDang, 2 invisible), 244 guests, and 3 robots.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums50
Topics120,085
Posts961,794
Members43,554
Most Online1,229
Jan 21st, 2020
Image Posting Policy
Previous Thread
Next Thread
Print Thread
Page 3 of 3 1 2 3
Re: Oil Additives
truckernix #1196071 Tue Dec 20 2016 12:59 AM
Joined: Oct 2016
Posts: 685
N
Shop Shark
I generally steer away from oil threads, but here I am... what about this article? Seems like there might be a limit to how much zinc you should add...

Too much zdp causes camshaft damage...

Last edited by Norcal Dave; Tue Dec 20 2016 01:16 AM.

Dave

Clutch head screws have stolen too many hours from my life....

1950 Chevy 3600 (resto-something) - the work resumes...
https://goo.gl/photos/8t5mLuj4JZebvGq49

1963 GMC Widebed Custom

1951(?) GMC flatbed that is now a flower garden:
https://goo.gl/photos/H79pvKhHLxjNiR149

1968 Chevy II Nova- not running, waiting for me to finish the '50 3600
https://goo.gl/photos/Dh7q4pt3WSkKjjFr9
Re: Oil Additives
Jay Zed #1196075 Tue Dec 20 2016 01:43 AM
Joined: Dec 2006
Posts: 1,154
W
Shop Shark
I wrote to Vavoline about ZDDP content in their "off road" racing oil. Now on their oil cans it reads with ZDDP on a bright label on the VR-1 racing oil cans. Also about the additives to oil... Vavoline racing oils far exceedes any oil requirements and those reported "super Nano lubricantes" just burn off within 100 miles. The Vavoline oil is blended not to break down in extreme heat or cold. For our 235 they recommended 10-30 wt....if you have questions Vavoline will give you an answer via email....just go to their website.

Re: Oil Additives
Jay Zed #1196084 Tue Dec 20 2016 02:14 AM
Joined: May 2001
Posts: 8,386
Extreme Gabster
The way I understand it the high ZDDP is a requirement for the break in cycle of a new cam and new flat tappet lifters. After break in it is not so important. If you used a new or reground cam and new or resurfaced lifters in your rebuild you should definitely use a high ZDDP break in oil.

I still use a supplement with every change on my classics with flat tappet cams just in case.


"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.
My TRUCKS website
Re: Oil Additives
Jay Zed #1196136 Tue Dec 20 2016 04:46 PM
Joined: Feb 2000
Posts: 4,149
J
Shop Shark
VR1 is good for any type of cam, including racing engines, so your 261 will be cover with no problems.

Re: Oil Additives
Jay Zed #1196172 Tue Dec 20 2016 09:05 PM
Joined: Sep 2008
Posts: 882
P
Shop Shark
Another 'you need zinc' thread? Oh yeah!!!

First, the oil of today has THE SAME AMOUNT OF ZINC FROM THE 50s!!!!!!!!! THE SAME AMOUNT.

The reason zinc was excessively added to oil in the 70's was because its a cheap anti-oxidizing agent. It was never added to street cars for protection of flat tappet cams.

Flat tappet motors are still being made today (they call them inverted bucket) and are usually in lower performance engines because of cost and modern oil still provide sufficient protection with the current API standard.

The ONLY VALID reason for adding zinc is because of a high performance cam with double valve springs and the like. Even that is questionable because if you have such a high performance cam you're gonna be using roller lifters, not flat tappets. So if you want a whumpa whumpa engine and still run flat tappets, they yeah, you're gonna need something like ZDDP to make it last... but zinc over 1200ppm is a waste and WILL start to etch the metal making more friction etc.

So unless you know you have a high lift cam and very stiff (outside factory spec) valve springs adding ZDDP, using synthetic oil or pouring unicorn tears into the oil is not going to do anything but waste money.

And no, you don't need ZDDP at break in. Assembly lube is all you need.

Que all the race car experts that say otherwise (just remember, I never said anything about race cars... I EXPLIXITLY stated that high lift cams/high tension valve springs *might* need additives... but really if you're doing high lift the smart people will have switched to rollers).

Re: Oil Additives
Jay Zed #1196175 Tue Dec 20 2016 09:33 PM
Joined: Feb 2004
Posts: 20,619
H
Boltergeist
http://1.bp.blogspot.com/_8b-XENr7QNE/TQtm5_hWiHI/AAAAAAAABuA/if73I6fHm3A/s1600/don%2527t+care+owl.jpg

Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: Oil Additives
Jay Zed #1196257 Wed Dec 21 2016 03:43 AM
Joined: Oct 2016
Posts: 685
N
Shop Shark
I am glad that we are all in agreement!!


Dave

Clutch head screws have stolen too many hours from my life....

1950 Chevy 3600 (resto-something) - the work resumes...
https://goo.gl/photos/8t5mLuj4JZebvGq49

1963 GMC Widebed Custom

1951(?) GMC flatbed that is now a flower garden:
https://goo.gl/photos/H79pvKhHLxjNiR149

1968 Chevy II Nova- not running, waiting for me to finish the '50 3600
https://goo.gl/photos/Dh7q4pt3WSkKjjFr9
Re: Oil Additives
Hotrod Lincoln #1196264 Wed Dec 21 2016 04:28 AM
Joined: Sep 2001
Posts: 30,165
ace skiver
Whooo gives a hoot - as Jerry points out.


Tim
1954Advance-Design.com [1954advance-design.com]
1954 3106 Carryall Suburban [stovebolt.com] - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic [1954advance-design.com] - part of the family for 15 years
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engines are not "splash oilers" - this is a splash oiler. [chevy.oldcarmanualproject.com]
Re: Oil Additives
Jay Zed #1196277 Wed Dec 21 2016 04:57 AM
Joined: Mar 2010
Posts: 9,314
5
Master Gabster
EXPLIXITLY: The X rated version of explicitly?

Page 3 of 3 1 2 3

Moderated by  Woogeroo 

Link Copied to Clipboard
Home | FAQ | Forum | Swap Meet | Gallery | Tech Tips | Events | Features | Search | Hoo-Ya Shop
Powered by UBB.threads™ PHP Forum Software 7.7.4