Good point, Alan. It seems most motor oil manufacturers have several
different products, so we need to be careful to look at the specifications and
properties of a specific oil before passing judgement, not just the brand
name.
In the Amsoil example, It appears that AMSOIL SAE 20W-50 Synthetic High
Performance Motor Oil (ARO) would be OK in our old flat tappet engines, but
AMSOIL XL Synthetic Motor Oil would not.
In any case, I'll be checking the API donut on all the oil I use.
Jim
----- Original Message -----
From: Alan Seigrist Blue 100
To: Bluechipracing
Cc: Jnhorn@aol.com ; healeys@autox.team.net
Sent: Thursday, December 21, 2006 9:54 PM
Subject: Re: Oils - We've reached consensus
Jim -
This writeup seems to suggest Amsoil to be good for vintage cars:
http://www.amsoil.com/storefront/aro.aspx
Alan
On 12/22/06, Bluechipracing <bluechipracing@snet.net> wrote:
Hotshoe Jon's oil experience at Watkins Glen is impressive, and I can
testify that he has no mercy on his BJ8 racecar. However, I just
looked at
the Amsoil website, and their SYNTHETIC oil seems to have reduced ZDDP
additive like the other manufacturers. They state:
"AMSOIL XL Synthetic Motor Oils are friendly toward modern emission
control systems, helping improve catalytic converter service life for
low
exhaust emissions."
Best to check the API "Donut" on the bottle. If it states "Energy
Conserving" it is no good according to Keith Ansell.
Jim Smith
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