Dear Scotty,

thanks for the years of Amazing videos, we'd be lost without you.

FYI: YOU HAVE A HUGE FOLLOWING IN THE ARAB WORLD!

I have a 2016 WRX 2L Turbo with a CVT, Sadly I have committed few mistakes with this vehicle (Besides buying it 😆) .

I have 2 Problems, one related to the Fuel Octane in our country which is 95RON (Equivalent to US PON91)

the recommended should be 98RON (US 93 PON), so I have alot of black soot on my exhausts.

and recently I ahve been having Lag and acceleration problems when cruising at low speed and open up the throttle the engine builds up power then jumps, I thought the CVT was failing, but there is no sound of slipping or jittering at lows speeds.

I suspect  it might be a particle issue in the turbo or injectors as the dealership always filled the vehicle with Motul X-CESS 5W40 Oil, I recently discovered a USA Service bulletin stating to stay away from that type of oil as it causes build up with Direct injection systems and should only use 5W30 API SN PLUS.

I was thinking to do an engine flush and maybe clean up any debris before changing to the recommended Oil Type.

the Best reputable Engine Flush I could find is the "Liqui Moly Engine Flush Plus".

Would you recommend doing an oil flush or have a professional look into a carbon clean?

thank you and sorry for the long post.