My poo 550 fan burnt down at 320 miles,(Yea I know but I'm stuck now) had switched from polaris blue semi-syn to VES gold. It says i can run either blue, or VES gold. No variable exhaust. Since rebuild have not changed to VES gold. Should i stick with the blue, since they want me to run that for break-in, or switch to VES gold. I have lots of feedback from people here but would like additional input. I've also been running 8 oz or so in the gas tank (10 gal), after the break-in pre mix, Good Idea Or no. Fouling plugs is least of my concerns.