The problem in the USA with 504 is the low additive levels don't work well with the alcohol and sulphur in our gas. Dealers use 502 5w-40 and 10k intervals.
I don't trust any oil past 10k, the downside is too great.
Direct Injection can ruin most any oil....
I don't trust any oil past 10k, the downside is too great.
Direct Injection can ruin most any oil....

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