BEST Unleaded Fuel: Shell, Petron or Caltex

[dr. d]

It got me a little bit worried after watching Shell's fuel video showing the gunk accumulated in the valve.

I've been using Clean Fuel since the beginning of this year, coming from Total, mula nang magtuloy-tuloy ang pagtaas ang gas.

And I'm thinking if the lack of quality additive can be offset by the use of Fuel Injector Cleaner or the bit more expensive Complete Fuel System Cleaner at least once a year or any fuel additives without breaking the bank.

TIA

i am of the belief that running the engine occasionaly in the highway at high speed, helps keep the engine clean. the so-called italian tune-up.
but this is assuming, there is nothing wrong with the engine, except "carbon build-up".

if there is something else that's wrong with the engine, no amount of complete fuel system cleaner, can fix it.

my opinion.