Some of you know that I test fuel cleaners for PEA/PIA. I buy cleaners, test them, then pour them into both my cars (Range Rover Evoque 2.0 petrol & Range Rover L405 4.4 diesel). Couple years ago I had Cayenne and I did UOA after using 6 cleaners per interval - everything was perfect, no parameters were violated. So today I used the endoscope to look at the cylinders/valves. In short, awesome! Range Rover Evoque 2.0 petrol, 160,000 km mileage, but it seems like 20. Only one of the cylinders has minimal carbon deposits on the valve.
What I have filled in over the last 7000 km (almost every second gas station includes flushing):
Over 5000km:
Wynns Catalyc&Oxigen cleaner
KYK 63-017
Oilsyn PEA doctor
Texaco Techron 2 pcs in one tank
Bg 44k
Texaco Techron again
Xado MultiCleaner
Redline SL-1
Changed the oil and drove another 2000:
Pro-tec valve & injector cleaner
LM Direct Injector Cleaner
LM valve sauber
Wynns extreme petrol cleaner
Pulse GT petrol power cleaner
What I have filled in over the last 7000 km (almost every second gas station includes flushing):
Over 5000km:
Wynns Catalyc&Oxigen cleaner
KYK 63-017
Oilsyn PEA doctor
Texaco Techron 2 pcs in one tank
Bg 44k
Texaco Techron again
Xado MultiCleaner
Redline SL-1
Changed the oil and drove another 2000:
Pro-tec valve & injector cleaner
LM Direct Injector Cleaner
LM valve sauber
Wynns extreme petrol cleaner
Pulse GT petrol power cleaner