Thread: 1997 Civic Oil Viscosity
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Old 08-15-2011, 10:16 AM   #4 (permalink)
California98Civic
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Join Date: Mar 2011
Location: Coastal Southern California
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Black and Green - '98 Honda Civic DX Coupe
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90 day: 66.42 mpg (US)

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Quote:
Originally Posted by RandomFact314 View Post
The manual I downloaded online says go with 5w30, what do you guys think I should go with? Lower for MPG or stay with the 5w30? We never get below maybe 15 deg F at the coldest part of the year
I am running 5w30 in my 98 Civic in Southern California. I'm about ready to change my oil and go to 0w30, or even 20. But I don't think you should given you get freezing temps there. IMHO, that 15*F you talk about as a low is low enough. stick with the 5w30.
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.
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