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engine oil


Model: 911, Year:1986, Mileage:84000, Type of use:Street use only
I use Delo 400 LE 15W/40 oil. The API service is CJ-4/SM over CI-4 Plus. I am reading and hearing concerns about using this oil in my 1986 911 Carrera. Can you advise me if there will be or are any problems using this oil now that the zinc has been removed or lowered.

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