I dont know what to...zinc - Pirate4x4.Com : 4x4 and Off-Road Forum

lg33kt · 05-10-2012, 08:18 PM

Can someone please clear up exactly what the deal is with zinc additives and flat tapped cams. I know that it is important to use additives when the engine is being broken in, But now with nearly 5k miles on my rebuilt 1.3, Do i still have to put in a zinc additive now that zinc phosphate is no longer in conventional motoroils or is this all hubbub

r0nin89 · 05-10-2012, 08:41 PM

Either run "offroad" Valvoline race oil that still has zinc in it or put zinc additive in with every change.

Every motor with a flat tappet cam needs zinc in the oil ALL THE TIME. Break in is just the most crucial point. Although you may get away with it for a long time, not having zinc in your oil will cause your cam and lifters to wear out prematurely.

johnnyboy110 · 05-11-2012, 07:00 AM

What a second here, dose this mean I should also be putting some sort of zink additive in when I change oil also. I have never heard of this and have been in the automotive industry for years now. I also have a few flat tappet engines, never added anything to the oil and haven't had any issues.

johnnyboy110 · 05-11-2012, 07:07 AM

Check this link out. It has some usefull info I think.

http://www.valvoline.com/faqs/motor-oil/racing-oil/

mannysouza · 05-11-2012, 07:32 AM

I use the racing valvoline also and some say that the zinc will help keep a motor running if the engine starves for oil. I guess it bonds with the metal to make a coating. I'm not an engine builder and this is heard second hand to take it for what it is worth.

However, the racing valvoline doesn't have as much cleaning additives so frequent oil changes are needed.

igofshn · 05-11-2012, 09:41 AM

Quote:

Originally Posted by johnnyboy110

Check this link out. It has some usefull info I think.

http://www.valvoline.com/faqs/motor-oil/racing-oil/

Propaganda put out by the manufacturer. Of course they say you need this stuff. That is how they make their money.

NoEardGoat · 05-11-2012, 09:48 AM

Mobil 1 and Brad Penn racing oils have a high concentration of ZDDP. This is what is recommended in all Porsche, which have the same flat tappet camshaft issues.

crashnzuk · 05-11-2012, 11:37 AM

I run diesel oil in my flat tappet stuff. Though it doesn't have as much as it used to, it has way more than the current pass car oil.
Travis..

440-fide Ramcharger · 05-11-2012, 01:08 PM

http://www.zddplus.com/

This stuff is pretty popular in the turbo Buick world.

05-10-2012, 08:18 PM	#1 (permalink)
lg33kt Registered User Join Date: Nov 2011 Member # 203733 Posts: 12	I dont know what to...zinc Can someone please clear up exactly what the deal is with zinc additives and flat tapped cams. I know that it is important to use additives when the engine is being broken in, But now with nearly 5k miles on my rebuilt 1.3, Do i still have to put in a zinc additive now that zinc phosphate is no longer in conventional motoroils or is this all hubbub

05-10-2012, 08:41 PM	#2 (permalink)
r0nin89 Registered User Join Date: Oct 2006 Member # 80727 Location: Jackson, NJ Posts: 1,079	Either run "offroad" Valvoline race oil that still has zinc in it or put zinc additive in with every change. Every motor with a flat tappet cam needs zinc in the oil ALL THE TIME. Break in is just the most crucial point. Although you may get away with it for a long time, not having zinc in your oil will cause your cam and lifters to wear out prematurely. __________________ 1994 Isuzu Trooper: OM617/W56/toybox 4.56 Dana 44 w/ lockright/6 lug Ford 8.8 4.56 Ox locker

05-11-2012, 07:32 AM	#5 (permalink)
mannysouza Granite Guru Join Date: Sep 2003 Member # 22726 Location: Gilroy Posts: 938	I use the racing valvoline also and some say that the zinc will help keep a motor running if the engine starves for oil. I guess it bonds with the metal to make a coating. I'm not an engine builder and this is heard second hand to take it for what it is worth. However, the racing valvoline doesn't have as much cleaning additives so frequent oil changes are needed. __________________ The more things you own, the more they own you!

05-11-2012, 11:37 AM	#8 (permalink)
crashnzuk Registered User Join Date: Mar 2003 Member # 17632 Location: West Sacramento, CA Posts: 5,422	I run diesel oil in my flat tappet stuff. Though it doesn't have as much as it used to, it has way more than the current pass car oil. Travis.. __________________ 74 Ramcharger, 360, 4spd, 60/70 on 37s 91.5 Dodge 6BT 5 spd tow rig

05-11-2012, 01:08 PM	#9 (permalink)
440-fide Ramcharger Granite Guru Join Date: Aug 2000 Member # 1602 Location: San Jose, Ca USA Posts: 737	http://www.zddplus.com/ This stuff is pretty popular in the turbo Buick world. __________________ Mark E. San Jose, Ca SOLD 75 Ramcharger 440, blah, blah SOLD 66 Welder Bill't Bronco Rockbuggy 06 CTD 87 Buick Grand National X2 65 Vista Cruiser GN Turbo V6 powered

05-11-2012, 07:00 AM	#3 (permalink)
johnnyboy110 Registered User Join Date: Aug 2009 Member # 141230 Posts: 119	What a second here, dose this mean I should also be putting some sort of zink additive in when I change oil also. I have never heard of this and have been in the automotive industry for years now. I also have a few flat tappet engines, never added anything to the oil and haven't had any issues.

05-11-2012, 07:07 AM	#4 (permalink)
johnnyboy110 Registered User Join Date: Aug 2009 Member # 141230 Posts: 119	Check this link out. It has some usefull info I think. http://www.valvoline.com/faqs/motor-oil/racing-oil/

05-11-2012, 09:48 AM	#7 (permalink)
NoEardGoat Registered User Join Date: Mar 2005 Member # 44732 Location: Paso Robles, CA Posts: 29	Mobil 1 and Brad Penn racing oils have a high concentration of ZDDP. This is what is recommended in all Porsche, which have the same flat tappet camshaft issues.

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