how does the mobil 1 ful syn taste? its ok to switch this early to full syn? (my car's got about 7k on it) I used the mobil 1 and then 2nd oil change i went to castrol partial blend cause i didnt know if i was making the change too early. I dont beat down on it at all RIGHT NOW. but i do plan on having this car for a long time. whats your advice?
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