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Mixing different brands of oil..

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Old 04-27-2007, 08:59 AM
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dskang100
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Default Mixing different brands of oil..

Hey everyone I have a question.. yes it's about mixing different brands of oils. Certainly not for my car but we have a beater minivan with 250k miles on the odo.

I have a bottle of Mobil 1 synthetic, 5w 30 and a bottle of penz platinum 10w 30.. can anyone tell me if it would be okay to mix them up just once? Thanks for the input.
Old 04-27-2007, 09:20 AM
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MustGoFastR
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Yes, it will be fine.
Old 04-27-2007, 09:57 AM
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scotts300
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I wouldn't with my cars, but it's your beater.
Old 04-27-2007, 10:29 AM
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Mike Wazowski
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nothing wrong with mixing oils
Old 04-27-2007, 11:15 AM
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scotts300
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Topping off the oil level with a different brand/viscosity is better than running low on oil, however, it is not a suggested procedure if it can be avoided.

-Aircraft Maintenance Technology, 2003, via Phillips66lubricants.com

"Some synthetics producers, however, do caution against mixing different brands of synthetics with one another, since their compositional origins may be quite different."

http://www.mr2.com/TEXT/synth_oil.txt

So yes, it's "ok" to do it, but I wouldn't given the choice and non-emergency.
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