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Diff oils diff pressures?

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Old 04-25-2009, 12:38 AM
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Default Diff oils diff pressures?

I used Castrol CTX non senthetic 10w 30 w/ a mobil 1 oil filter and my 6.0 (lq4) and my OP was always around 48-50 at idle.

I just did my first oil change.. this time I am using Valvoline 10w 30 w/ a bosche filter and the OP at idle is 42. I am wondering if brands can make that much of a difference even though its the same weight.

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Last edited by Slow5.0.; 04-14-2010 at 03:43 AM.




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