Below is my inquiry & Castrol's reply.
Gary Hodson
To: warthodson@aol.com
Sent: 3/19/2008 10:49:36 A.M. Central Daylight Time
Subj: RE: Castrol USA - Contact Us Form Data
The new formula Syntec 20W-50 for classic cars is API SM. The statement
"Recommended for Classic Cars" should be visible in the middle of the back
label.
The Zinc levels in the API SM / ILSAC GF-4 viscosity grades are defined by a
table of requirements but in basic terms 20W-50 is not held to the same
requirements as the lower viscosity grades (5W-20, 0W-30, 5W-30, 10W-30);
20W-50 can be higher.
Current Syntec 20W-50 (for classic cars) is actually a modern premium
quality API SM product that has been Zinc boosted to Zinc levels that are
reminiscent of Zinc levels from historic API categories such as SG when flat
tappet cams with high spring loads were common in the fleet. The API SM
category has the most rigorous passenger car engine oil (PCO) test
performance requirements in the history of the API PCO categories.
Castrol Consumer Relations
-----Original Message-----
From: ContactUs@BP.com [mailto:ContactUs@BP.com]
Sent: Wednesday, March 19, 2008 9:43 AM
To: Online customer service
Subject: Castrol USA - Contact Us Form Data
Importance: High
Subject: Castrol USA - Contact Us Form Data
Dear Online customer service,
UNIQUEREFERENCEID : 1436497
DATE : Wed Mar 19 13:14:58 GMT 2008
TITLE : Mr.
FIRST NAME : Gary
LAST NAME : Hodson
EMAIL : warthodson@aol.com
ADDRESS : ---
CITY : ---
STATE : ---
COUNTRY : United States of America
ZIP CODE : ---
LEGAL DISCLAIMER. : YES
CATEGORY : For Me
SUBCATEGORY : Products
PHONE NUMBER : 913-441-8335
CONTACTREASON : Inquiry
INQUIRYDETAILS : I understand Castrol is currently recommending
Castrol Syntec 20W-50 for classic cars equipped with flat tappet cam
engines. You also claim that this oil has the higher levels of ZDDP required
by these engines. However, Syntec 20W-50 is API "SM" rated which I
understand mandates reduced levels of ZDDP than previous API standards. How
do you explain this apparent discrepency? Also, what is the actual percent of
ZDDP in API "SM" rated Castrol Syntec 20W-50?
CARMAKE : ---
CARMODEL : ---
CARYEAR : ---
WHOCHAGESTHEOIL : ---
BUSINESSINVOLVEMENTTYPE : ---
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