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Safe to run a 5w30 oil?

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Old 08-25-2010, 08:49 AM
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69MustangCoupe393cid
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Default Safe to run a 5w30 oil?
Anyone running a 5w30 in these 4.6's? Can the oil pump and galleys handle it, or is it to thick?
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Old 08-25-2010, 09:09 AM
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tightdogal
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Shuoldn't hurt anything. 5w-30 is thicker than 5w-20 when the engine is warmer. I've used it before, no issues.
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Old 08-25-2010, 09:18 AM
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teej281
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Thats the only kinda oil I use.
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Old 08-25-2010, 10:09 AM
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Yup thats my weight too.
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Old 08-25-2010, 12:34 PM
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Hangwire
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I use 10w30 in the summer and i'm considering using it permanently. The heavier the oil the better protection. The gains you get from using that light 5W20 are trivial and hard to prove. Cliffy will chime in.
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Old 08-25-2010, 12:35 PM
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DreamerGT
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To give you an idea, Im running 10w-40 in my vic and it runs just fine.
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Old 08-25-2010, 12:51 PM
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69MustangCoupe393cid
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Ok works for me, I just wanted to be sure the engine was capible of handling the thicker oil, done deal. I'm running the thicker stuff, 20 weight is just to thin for me to sleep at night.
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Old 08-25-2010, 03:47 PM
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nickmckinney
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Originally Posted by 69MustangCoupe393cid
Anyone running a 5w30 in these 4.6's? Can the oil pump and galleys handle it, or is it to thick?

Ford specs 50W for the GT500..................
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Old 08-25-2010, 03:47 PM
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cliffyk
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I've been running 10W-40 (changed every 2500 to 3000 miles) for 3-1/2 years and 75k miles...
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Old 08-25-2010, 03:50 PM
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H0SS302
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OEM spec all the way for me. I do what the manual says.
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