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Old Jan 10, 2008 | 09:41 PM
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i was just wondering what kind of oil you all are running in your modified ls1's?
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Old Jan 10, 2008 | 09:48 PM
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Do a search
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Old Jan 10, 2008 | 10:21 PM
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Lots of threads....Mobil 1 Fully Synthetic here though
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Old Jan 10, 2008 | 11:34 PM
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German Castrol.
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Old Jan 10, 2008 | 11:40 PM
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Royal Purple in my 408
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Old Jan 11, 2008 | 08:46 AM
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castrol syntec 5w-40!!
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Old Jan 11, 2008 | 11:23 AM
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Nothing but, royal purple here.
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Old Jan 11, 2008 | 11:42 AM
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Mobil 1 performance 5w50. I think it is 10w50 in the US.

Russ Kemp
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Old Jan 11, 2008 | 12:41 PM
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you guys should look an BG's moa oil addivtive. they did tests and most oil breakes down pretty fast even moble one.
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Old Jan 11, 2008 | 01:30 PM
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moblie 1 5w 30 fully synthetic
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Old Jan 11, 2008 | 01:53 PM
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Originally Posted by WhiteFormula98
moblie 1 5w 30 fully synthetic
That statement is an oxymoron considering mobil 1 isn't even a true synthetic anymore.
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Old Jan 11, 2008 | 02:16 PM
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Royal Purple user here.
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Old Jan 11, 2008 | 04:16 PM
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Amsoil
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Old Jan 11, 2008 | 05:14 PM
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Originally Posted by COD02SS
That statement is an oxymoron considering mobil 1 isn't even a true synthetic anymore.
Ditto that.
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Old Jan 13, 2008 | 08:47 PM
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Amsoil
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Old Jan 13, 2008 | 09:03 PM
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mobil 1, RP, castrol, Pennzoil there all great. but i use mobil 1 synthetic high mileage ATFW
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Old Jan 13, 2008 | 09:10 PM
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alright so i bit the bullet today and tackled the oil situation i decided to go with mobil one 0w 40 German formula
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Old Jan 13, 2008 | 09:11 PM
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Originally Posted by COD02SS
That statement is an oxymoron considering mobil 1 isn't even a true synthetic anymore.
idk on the box of mobil one i have it says "Fully Synthetic"
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Old Jan 13, 2008 | 10:41 PM
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valvoline 10w30 syn here
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Old Jan 13, 2008 | 10:56 PM
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what does every one think of the valvoline sae 50 and 60 race oils? and royal purple the guy at this race shop here in colorado said that royal purple has screwed up some bearings in their race engines
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