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Mobil vs. Castrol
I am about to do my first oil change and I was wondering about oil brand to pick. I know there been infinite battles over which oil to buy, but all let practically nowhere.
So I visited Castrol website and for E90 they have 5W30 Synthec
Mobil1 has 0W40 for E90
Now I am confused which one to buy. Anybody can help me? Thansk
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