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Originally Posted by o2man98
BS!!! You can was synthetic at anytime regardless of the myths out there. I install it between 500 and 1000 miles on all my new vehicles. I just built a big bore stroker Harley V-Rod and fill it with Amsoil synthetic before it was even in the frame. I have yet to have to add any oil and it is making excellent HP.
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Synthetic oil is a personal preference. But calling engine break in a myth is not smart. Your engine may make good hp but you should at least break it in with regular, non detergent oil to promote ring seal.
Even Royal Purple now has a specific oil for break in. If synthetic was ok for break in, they wouldnt do create a product like that.