Re: zddp

["Donnie Schanz Jr" <dcs426@xxxxxxxxxxxxxx>]

Sorry guys but,
When is everyone going to understand...I dont care what oil company, what 
weight, what type of engine, what state, what country, what year, or how 
long you have been using your current type of oil. It is not the same oil it 
was just 5 or so years ago. It is not up to the company, this is not hard to 
understand...they do not have the choice of whether to add it or not. UNCLE 
SAM'S EPA said to remove it!!! If they want to stay in business, they 
removed it. Read all you want, the LAW says it is not to be in there. It was 
a needed additive for flat tappet cams...hyd or solid, either one. New cars 
have roller cams and do not require it, therefore it was removed so it no 
longer comes out your exhaust pipe. Unless you have a few cases of 5 year 
old oil in your garage, you are in the same boat as everyone else. The guys 
who are responding about the Castrol, or Rotella, or whatever are just 
fooling themselves. My friend runs a 10 sec Grand National street car to 
work everyday. He is a Rotella guy all the way from his snowmobiles to the 
GN. Every oil change...5 qts of new Rotella and 1 bottle of ZDDP. He also 
owns our local Hi-perf garage where all the guys will go to get mods done to 
their cars they wont attemped themselves. I personally run 15w-40 Wolfshead 
heavy duty and Lucas oil's friction additive and ZDDP, in every engine I 
have. A blown 409 Chevy, Max Wedge, and 11 sec Buick 3.8 Turbo.
This should not be so hard to get guys to understand...you oil does not have 
zinc or the other need particles to protect your engine.

Read this... I hope it clears this up for everyone
ter As part of an effort to reduce vehicle emissions, the U.S. EPA offers 
vehicle manufacturers "credits" for early implementation as well as 
penalties for violation of emission reduction standards. The EPA's program 
called for 100,000-mile catalytic converter life by 2004, 120,000 miles by 
2007, and 150,000 miles by 2009. To achieve these goals, automotive 
manufacturers have pressured their oil suppliers to remove substances from 
motor oils that would shorten the service life, including the proven EP 
(extreme pressure) additive ZDDP (zinc dialkyldithiophosphate). Zinc and 
phosphorus from the ZDDP can be present in small amounts in the exhaust gas 
of an engine depending on the amount of oil which is consumed in combustion. 
These elements can coat the catalyst reducing the amount of catalyst exposed 
to the exhaust gases, ultimately increasing emissions at the tailpipe. As a 
result of the EPA mandate, the ZDDP level in engine oils has been declining 
since the mid-1990s, roughly coinciding with the implementation of OBDII.

    ZDDP has been an important additive to engine oils for over 70 years, 
and has an excellent track record at protecting the sliding metal-to-metal 
cam lifter interface. Historically, ZDDP has been added to oils in amounts 
resulting in approximately 0.15% phosphorus, and 0.18% zinc. ZDDP protects 
by creating a film on cams and flat lifter contact points in response to the 
extreme pressure and heat at the contact point. The film of zinc and 
phosphorus compounds provides a sacrificial wear surface protecting the base 
metal of the cam and lifter from wear. In the course of normal service, this 
conversion of ZDDP to zinc and phosphorus compounds depletes the ZDDP level 
in the oil. Studies show that depending on the specific engine and severity 
of duty, after 2000-4000 miles of operation, the level of ZDDP can drop 
below that considered adequate to provide wear protection to the cam and 
lifters.

    According to the SAE Tech Bulletin # 770087 [1] , operation of a flat 
tappet engine without adequate EP additives such as ZDDP quickly leads to 
lifter foot scuffing and cam lobe wear. Camshafts are typically only surface 
hardened leaving the core ductile for strength. According to the SAE 
Bulletin, once cam lobe wear reaches 0.0002, "subsequent wear is usually 
rapid and catastrophic." Two ten-thousandths of an inch is one fifth the 
thickness of an average human hair.

    In order to make engines last in the absence of ZDDP, virtually all IC 
(internal combustion) engines designed in the last ten years utilize roller 
lifters. Today, ZDDP has been removed from practically all automotive engine 
oils, rendering them unsuitable for use with older engines with non-roller 
lifters.


ZDDPlusTto your motor oil at every oil change.
Donnie


----- Original Message ----- 
From: "Gary H." <62to65mopar@xxxxxxxxxxx>
To: <1962to1965mopars@xxxxxxxxxxxxxxxx>
Sent: Friday, September 16, 2011 12:52 PM
Subject: Re: zddp


Agree. However, my understanding is the newest API rating Rotella diesel is 
reformulated and has little of that additive though. Additives are reduced 
to match the current standards. The Rotella from 3 years ago is not the same 
as the product on the market now, afaik.

Thanks,
Gary H.

>  -------Original Message-------
>  From: Joseph Bitterman
>
>  i have been using rotella diesel oil for 3 years now in all 3 of my 
> hotrods
>  with no other additives and have had no problems with cam lobes it has
>  additives that regular gas engine oils no longer carry and has been my
>  choice for diesels for 30 plus years,,

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