Conclusions on Ecoboost Engine Oil - Gas Turbo Direct Injection

I have tested a lot of different API SP oils from the Walmart shelf and came to the conclusion that any API SP oil will have excellent iron wear results. Much better iron wear results then what I saw in API SN and API SN+ oils. However, the constant issue seemed to be fuel dilution and how will that effect the detergents in the oil to prevent high mileage sludge.

So I have picked Quaker State Euro 5W40 API SP as the oil for my Ecoboost engine. Its 20% thicker than typical 5W30s and...

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