5w30 stead of 10w30? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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 01-28-2006, 07:35 PM   #1
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Default 5w30 stead of 10w30?

would using 5w30 make any difference in my engine? seeing as how i work at a ford dealer we have 5w20 and 5w30, so i could get free oil, but if it would be bad then i dont wanna
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Old 01-28-2006, 07:39 PM   #2
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thats what i use, 5w30 synthetic. Good for winter but I use it all year around
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Old 01-28-2006, 08:35 PM   #3
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thats what i use, 5w30 synthetic. Good for winter but I use it all year around
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