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04-03-2017, 02:06 PM
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Member
Join Date: Apr 2005
Location: san antonio tx
Posts: 259
Likes: 5
Liked 28 Times in 15 Posts
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Re: 5.3 LS Top End Noise
Haven't heard the noise since I started this thread. Now a different but similar subject, what viscosity oil should I be using in an engine with this many miles? When new it used 5W30, at 150K switched to 10W30. Should I go to a heavier oil? Using Castrol Hi Mileage type.
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