Sorry, but im not running dirty oil through my turbo. Longer life isnt the only advantage of Syn oil. It creates less friction all the way around. Id rather spend $30 every 3k miles than trash a new turbo due to shitty oil.
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"So...is there any tread left on the tire..or at this point would it be like throwing a hotdog down a hallway"
-Stewie (Family Guy)