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View Poll Results: What engine oil weight for my blown engine?
10-30wt
11
68.75%
20-50wt
1
6.25%
other-you name it
4
25.00%
Voters: 16. You may not vote on this poll

Oil Viscosity

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Old 06-26-2007, 02:47 PM
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Default Oil Viscosity
Enough of the polls on which brand, what I want to know is which viscosity is appropriate for the mild climate and the harsh condition I subject my engine to?
I have always run a 10-30wt. and have been thinking of switching to a 20-50wt.
Yes,
no?
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Old 06-26-2007, 02:51 PM
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I've always ran 10w-30 for a good all around viscosity but then again, I'm not pushing boost through my engine...
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Old 06-26-2007, 03:15 PM
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There is no need to run 50wt oil blown or not. Your bearing clearances are designed for 30wt.
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Old 06-27-2007, 09:51 AM
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I'd say that a 10W40 would work perfect. I remember seeing stacey david on trucks putting 10W40 royal purple in an 02 with a 5.3. I know, totally different situation, but if he put 40W into a 5.3, it has to work, right?
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Old 06-27-2007, 09:56 AM
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Unless you're having a problem with very high oil temperatures, I would stick with 10W30.
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Old 06-27-2007, 10:51 AM
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I use M1 0-40.
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Old 06-27-2007, 11:13 AM
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I use 10w-40
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Old 06-27-2007, 11:55 AM
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10w30 Mobil 1 here in the 5.3 and the 355!
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Old 06-27-2007, 12:20 PM
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What does Rick reccomend?
that is what I would go with
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Old 06-27-2007, 12:55 PM
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I'll talk to Rick in a couple of weeks when I take the truck in for some fuel system upgrades....Looks like the 10-30 is fine from the feedback you guys have offered, thanks.
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