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1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 10-27-2008, 01:33 AM   #1
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Is changing to 5W-30 for the winter a good idea?
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Old 10-27-2008, 05:10 PM   #2
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it is if you live in a place that gets colder than 32 degrees. 5w30 is thinner oil and therefore it moves through the system better when its cold. it keeps the engine lubricated better and prevents damage to the bearings and cylinder walls. so yes, switch to 5w30 for the winter
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Old 10-27-2008, 06:57 PM   #3
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i have never switched based on Weather Conditions, and i live in Western PA
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Old 10-28-2008, 01:27 AM   #4
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I run 5w30 all year round. I live in Wisconsin, and it gets cold here, also hot in the summer. 5w30 is teh best all around weight to use
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