10-10-2013, 11:03 PM
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CC Member
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Join Date: Jan 2008
Location: Nashville,
TN
Cobra Make, Engine: Backdraft, SBF 351w (463 CI)
Posts: 272
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Not Ranked
Quote:
Originally Posted by CHANMADD
Wait a minute......a multi garde oil ....10w60....is a SAE.10.oil with additives to make it lubricate like a SAE 60.When the additives break down you're left with a 10 weight oil. Very thin, 5 weight is like water. In our old engines I prefer 20w50. This is why with multigrades oil changes are essential.
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Most cobra owners change oil once, or twice a season (1500 to 3000 miles) and never see 230 Degrees oil temp. Do u really think he is running his engine hard enough to create enough heat to break down his oil to 10w in this time period??????? Not even close.
Oil viscosity is based primarily on bearing clearance not because u have an "old engine" I would bet the farm he does not have a loose bearing package.
Cobra 53
Do yourself a favor and call a couple of lubricant specialist (Joe Gibbs racing, Brad Penn). Then report back on what they say. 
Last edited by PLDRIVE; 10-11-2013 at 09:53 AM..
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