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Brad1987 said:
So apparently oils are oils then yeah... castrol you lie!
Yes, next time you do an oil change I recommend extra virgin olive oil, but make sure it's cold pressed!

Justin.
 

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but they were comparing 10w40 to 10w50, not 15w50. Both 10w40 snd 10w50 have same cold viscosity of "10". So cold-start conditions would be same.
 
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