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Old 06-22-2011   #1
Don in VT
 
Join Date: Jul 2010
Location: Fairfax, VT
Posts: 203
Default Amsoil viscositys

Hi,

I have searched the solutions link and read as much as I can find on the forum and I can only see the Amsoil 10/40 listed as the oil of choice. I have a low miles 90 (34K) and I am considering using Amsoil 5/30. Is this OK to use as well.

Thanks

Don

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Old 06-22-2011   #2
ZR1Vette
 
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Join Date: Dec 2007
Location: Reston, Virginia
Posts: 939
Default Re: Amsoil viscositys

The Amsoil 10W-40 AMO is 100% what you should use...it has the correct formulation for a higher zinc and phosphorus mix needed for the LT5 engine. You have it right
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Old 06-22-2011   #3
cvette98pacecar
 
Join Date: May 2011
Location: Sydney, Australia
Posts: 2,479
Default Re: Amsoil viscositys

Quote:
Originally Posted by Don in VT View Post
Hi,

I have searched the solutions link and read as much as I can find on the forum and I can only see the Amsoil 10/40 listed as the oil of choice. I have a low miles 90 (34K) and I am considering using Amsoil 5/30. Is this OK to use as well.

Thanks

Don

Here is the link, unless you are planning on driving your Z in the cold stick with the 10-40 high Z.

http://www.amsoil.com/techservicesbu...t%20Tappet.pdf
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Old 06-23-2011   #4
PhillipsLT5
 
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Join Date: Aug 2005
Location: Scottsdale, AZ
Posts: 2,452
Default Re: Amsoil viscositys

http://www.zr1specialist.com/HAT%20W...5%20Engine.pdf
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