so i have a 1975 Ford Capri 3.0 V6 Ghia, around august 30th this year i switched from 10w40 simi synthetic to 20w50 mineral since it's what my Capri is supposed to run , i know the rule of thumb for most mineral oils is 3000 Miles but other people ahve told me to change it at least once a year even though i drive no more than 1500 / 2000 miles a year , the oil is Shell Helix 3 API SJ / CF
bieng a classic ofcourse it does burn some oil and gets maybe half a quart every month or so
bieng a classic ofcourse it does burn some oil and gets maybe half a quart every month or so
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