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mixing Mobil 1 oil

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Old 02-12-2007, 12:11 AM
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burkepat
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Default mixing Mobil 1 oil
My C4S is a little low on oil...they put in 15W-50 at the dealer last time I got the oil changed.

I have some 0W-40 in my garage...ok to add?
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Old 02-12-2007, 12:18 AM
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CosmosC4S
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Not a problem at all
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Old 02-12-2007, 12:23 AM
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burkepat
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thank you!
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Old 02-12-2007, 01:42 AM
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BlackCab996
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Are you sure? I was pretty certain you were not supposed to mix viscosities. I could be completely misinformed/under the wrong impression.
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Old 02-12-2007, 01:52 AM
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cdodkin
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No problem what so ever - go ahead and top off.
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Old 02-12-2007, 07:12 AM
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Old 02-12-2007, 07:43 AM
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gota911
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Oil? Did someone say oil?

IT'S POPCORN TIME, KIDS!

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Old 02-12-2007, 08:40 AM
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Phil G.
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Always been my understanding that mixing viscosities was OK. Also understand that if you inadvertently mix conventional with synthetic, it won't cause damage either, although I'd sure be careful not to do it.
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Old 02-12-2007, 01:02 PM
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eurotrashed
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Also, I think I read somewhere not to mix different brands. Viscosities ok to mix within brands for topping off. But yes, gota911, oil means it's popcorn time!!
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Old 02-12-2007, 01:17 PM
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ArneeA
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Confucus says: If a drop of 15w50 mixes with 0w40 in the crankcase and nobody was around, would you hear it?
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Old 02-12-2007, 01:25 PM
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Tippy
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A quarter of the oil stays in when you change it (8-9 of the 12 total liters), so if you change viscosities, you are mixing oils.
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Old 02-12-2007, 01:55 PM
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Mike Murphy
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You shouldn't mix viscosities and brands as a general rule. It will not cause any damage or concern whatsoever, however, so don't worry about it.
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Old 02-12-2007, 05:36 PM
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waldrondigital
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I just added 3/4 quart of 15/50 to my 0/40. guess I'm just rebellious
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Old 02-12-2007, 05:43 PM
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pl
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15/50 + 0/40
is it 7.5/45? or did i miss something?
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Old 02-12-2007, 05:53 PM
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Steven C.
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Now hold on there Cowboy...only 8 posts so this IS your first rodeo Don't just come round here posting oil Bulls... unless you got lots of that there darn PCorn ...ya hear
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