using royal purple?
so on my last oil change i used royal purple since i got 5 qts free. i always use mobile 1 fully syth. since it good for the price but i heard somewhere that if u go to use royal purple u gotta stick wit it for good is this true so i cant go back to using mobile1 one i gotta fork out the money to use royal purple?
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06 rsx-sold
05 is300-sold
08 boosted civic si- sold
94 boosted civic-sold
11 lancer-current
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