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Southern Discomfort
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6,290 Posts
Discussion Starter · #1 ·
Ok i have never done this but what exactly would go wrong? I have heard time and time not to do this but i dont know the science behind it and what the issue of this might be.
Say for instance you mixed 10w-30 with 10w-40 wouldnt that just equate to a 10w-35 blend?

Sorry if i sound like a noob here but i really want to know what problems, if any, it might cause.
 

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Bundy :cry:
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7,633 Posts
I htink there's an issue only when you mix didferent brands, as they have different forumals, additives. But when the weight is slightly off, should not be an issue dude.
 

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Breast inspector by appt.
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9,240 Posts
it's all just oil, what the hell can possibly happen? I guess semi-synthetic blends will blow up your engine too?
 
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