RE: Fuel for 160 DZ
I have been using Power Master 30/23 Low Viscosity for a year now, I love the fuel, it runs very smooth, never had any issue, I also flew Cool Power 30% High Performance heli works as good, I usually run it if I run out of powermaster, I also tried the Byron 30/24 Heli and also works good, but I prefer Powermaster then CoolPower.
You can use YS20/20 but the engine runs cooler with 30% and saves more fuel as it makes more power, some times saving 3 or 4 dollars is more expensive at the end, but if can only get 20/20 then you can use it with no problems.
I was never able to get the Power Master DZ fuel, so I only used the heli full and works good.
Regards