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Old 10-04-2013, 02:21 PM   #31 (permalink)
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I've been using the Mobil 1 0w-20 in my Civic which also calls for 5w-30. The only issue I'm having is the oil filter won't hold the oil overnight. I've tried Mobil 1, Bosch and Denso filters. The oil light stays on for a few seconds after starting. Each filter came off the engine completely empty.

As far as oil pressure while running is concerned, I can brake in gear until the engine is shaking and bucking. The oil light stays off. It's the alternator light that will flicker when I do that. 208k miles on this engine.

I did top off the oil this summer with a quart of 0w-30 for a little extra protection since I don't have an oil pressure gauge.

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Old 10-04-2013, 04:59 PM   #32 (permalink)
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Thanks, Gasoline Fumes.

I'm gonna do it!!! Gonna put the 0-20 in when I change my oil here pretty soon. Should just about correspond with the installation of the new Kamm-back I'm working on. Maybe if the weather cooperates for awhile longer, I'll get a chance for a new all-time mileage record before winter temps screw me up.
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Old 10-05-2013, 12:08 AM   #33 (permalink)
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Quote:
Originally Posted by wmjinman View Post
Maybe if the weather cooperates for awhile longer, I'll get a chance for a new all-time mileage record before winter temps screw me up.
And knock me out of the top 15? I can't let that happen!
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Old 10-05-2013, 09:58 AM   #34 (permalink)
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As others stated, check out Bobistheoilguy forum to learn about oil and weights. I dont think it has been said here yet that viscosity can vary widely between manufacturers. You want to search the oil companies websites for Product Data sheets stating viscosity at 40 C & 100 C, and also the viscosity index. A higher viscosity index is good for efficiency, it changes the slope of the viscosity vs. temperature graph, meaning you can have lower viscosity cold while maintaining same viscosity when hot. Mobil 1 0w-40 has a higher index, its an awesome oil for performance vehicles. But in my Corolla I think I'm looking to run thinner weight

Remember, if youre hypermiling, you probably aren't beating your engine where you would definitely want to use a thicker oil.

Mobil 1 0w-20 data sheet:
http://www.mobil.com/USA-English/Lub...l_Economy.aspx

Find the Product Data Sheet link at the bottom of this page:
http://www.mobiloil.com/USA-English/...l_1_0W-20.aspx
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Last edited by E.Roy; 10-05-2013 at 11:13 AM..
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Old 10-05-2013, 04:30 PM   #35 (permalink)
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Ha, I went changed my to Napa Syn 0w-20 after reading this today. It's $3.49 a qt, or $20 for 5 qts Syn and a filter. It's the same as valvoline, made by Ashland

http://www.valvoline.com/pdf/synpower.pdf

Interestingly, the 0w-20 nearly the same viscosity as 5-w20

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