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best summer oil?

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Old 05-28-2007, 07:06 PM
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How about Castrol Syntec 10W-40?
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Old 05-28-2007, 07:28 PM
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Default Of course not, it's all in my head......
And I have a big head
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Old 05-28-2007, 09:41 PM
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Default Thanks NATE ...........................
ONE LOVE !
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Old 05-29-2007, 03:43 AM
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Default Castrol Syntec -- John Force FTW!!! (Actually, it's what my dealer uses)
So I do too.
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Old 05-29-2007, 06:49 AM
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I like the M1 5-40 TDT....I'm using this instead of the 0w30 GC as a summer oil...
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Old 05-29-2007, 06:52 AM
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Default I'm running Syntec 5w-50
I figured id give it a try since my turbo is oil cooled only and gets rather hot.
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Old 05-29-2007, 07:36 AM
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Default Typical race oil is a 10 weight.Mobil 1 /R/ is 0w-30. Heavy oil=pumping losses, but smoother as you
percieve as more power. fwiw, I know a guy using Motorcraft 5w-20 in his 05 Lamborghini. That's just how it is. I use thick German Syntec in my RSX, it's smooth at high revs, but the power is not there like thinner oil. Also, a Shell research experiment found thicker oil films in the upper cyl with 20 weight oil.
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Old 05-29-2007, 07:39 AM
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Yeah. Ester-base at 14cSt, a bit thicker than GC at 12cSt. I use GC in summer my Acura takes 8cSt 20
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Old 05-29-2007, 07:40 AM
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Default It has the Generic Euro ACEA A3 rating which is the basis for VW 502.
Castrol is the Official oil of Audi and BMW. 10w-40 might be a lil more stout than 5w-40.
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Old 05-29-2007, 07:44 AM
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Default It's the shop oil at my BOSCH Center. Here's internal pics after 120k of 10k intervals Syntec 5w-50
<ul><li><a href="http://theoildrop.server101.com/forums/showflat.php?Cat=0&amp;Board=UBB1&amp;Number=64152 &amp;Searchpage=5&amp;Main=64146&amp;Words=removed &amp;topic=&amp;Search=true#Post64152">http://theoildrop.server101.com/forums/showflat.php?Cat
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