Oil viscosity mixing?? Help!

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06-18-2010, 10:23 PM

DocDirk

CC Member

Join Date: Jun 2006

Location: Merced, Ca

Cobra Make, Engine: West Coast-Ford Performance Solutions 533 BB

Posts: 390

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Oil viscosity mixing?? Help!

Sorry for a last minute question, but the wiffie and I are headed out for a long trip at 6 a.m. and I need to top off my oil a bit. Trouble is I found 4 containers of Pennzoil 10/30 and 3 containers of Castrol 20/50 on my oil shelf tonight and so help me I can't remember which I have in the car right now...will I cause problems if I happen to mix the viscosities? (I know you gearheads learned this at age four)

Thanks for any replies

Dirk

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Last edited by DocDirk; 06-18-2010 at 11:44 PM..

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