All you need is the specifications on the oil bottle that your engine calls for.
Everything else is marketing which includes pretty bottles, nice words, convincing claims. But never any proof that it is better then the specifications on the bottle.
Some very expensive oils may use a more expensive refined oil with many times more profit and markup added to the cost and again, only API specifications on the bottle matter.
Many decades ago, there was a large quality difference in some oils, many cases Castrol was king. These differences were even reported in Consumer Reports testing.
About a decade or more ago, Consumer reports has stated over and over again, today you might as well just pick by the API on the bottle, the oils protect just the same, oil has become a commodity, the additive packages are produced by a handful of companies and its a safe bet the bottle you buy meets the API rating. I am posting what I am just because of Consumer Reports, its just confirms what I already know.
Modern API standards are pretty much the deal now, pretty much an exact standard as most things in our world are.
I used to be a Castrol person because of testing, in the last decade and more so just the last couple years I now buy the lowest priced bottle that meets the API. Super Tech, Chevron, whatever.
I will admit, sometimes I am still "branded" to a brand name over Super Tech which is a FINE oil, for example, just ordered 3-5 quart jugs from Walmart on line, Chevron 5w30 @ $12.48 per container, free shipping too. I splurged and spent almost 50 cents more per 5 quart container over the Super Tech @ 11.98.
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