Hello
I am planning to use QMI engine treatment on my next oil change for my 911 carerra S, Do anyone have experience With this stuff? A local dealer here in Norway highly recommend it for me, but i am a little sceptic, i change oil every 800 miles and uses Valvoline Synpower 5W-40 and Royal Purple oil filter
I am planning to use QMI engine treatment on my next oil change for my 911 carerra S, Do anyone have experience With this stuff? A local dealer here in Norway highly recommend it for me, but i am a little sceptic, i change oil every 800 miles and uses Valvoline Synpower 5W-40 and Royal Purple oil filter