08-19-2007, 01:37 PM
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Senior Club Cobra Member
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Join Date: Jan 2005
Location: saratoga,
ca
Cobra Make, Engine: Kirkham #185, Shelby Alloy 482; sold
Posts: 1,190
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Not Ranked
Quote:
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Originally Posted by clayfoushee
I've been using Shell Rotella 15w-40 as well, but I am told the formula changed recently, and it now has a significantly lower zinc content. So, I'm searching for the best solution now.
Although I know synthetics are far superior for sheer strength, I have concerns about the slippery stuff in a 5-year old FE. It does tend to find ways to leak better too. |
I'm thinking of switching from Kendall GT-1 20W50 to the new formulation of Mobil 1 15w50 that has higher levels of ZDDP.
http://www.mobil1.com/USA-English/Mo...t_Engines.aspx
http://www.mobil.com/USA-English/Lub...il1_15W-50.asp
__________________
Dave
Last edited by 4pipes; 08-19-2007 at 01:41 PM..
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