QUOTE(SportyHandling @ Apr 21 2015, 06:15 PM)
I don't know. That is one possibility in that constant abuse might have caused the knocking of the engine (with RON95 fuel). Have not tried RON97 and will not do so for economic reasons.
There is little to zero difference between different type of fuels be it Petronas, Caltex, Shell, BHP etc. on the Ford Focus, but with the Proton Preve Turbo, somehow my car does not respond well to Petronas fuel but shows better performance with all other fuels in not showing the knocking/pinging sound from the engine during acceleration. Though had chosen Caltex for the power and and performance minus the knocking sound.
Good to hear your car does not have the knocking issue, and that you find no difference between Petronas RON95 and other fuels. Looks like the "problem" of this engine knocking varies between cars.
QUOTE(mengsuan @ Apr 21 2015, 09:56 PM)
I do agree that Caltex has less knocking sound. Petronas and Petron has louder knocking.
I have went to CoSE to diagnose the engine knock. There is no solution, nothing abnormal as well. Just live with it and have faith that the engine is operating within engineering limits.
Cause I'm using Petronas since last year, and so far so good, in fact I feel Petronas gives me the best power, compared to Petron/Shell and Caltex. Shell being the worse, Petron slightly better than Shell. Caltex no comment, cause don't feel anything much, just the knowledge that Caltex cleans your engine.
The moment i hesitantly changed to Petronas (after friend's recommendation few months ago), never looked back.
So just curious on your 'knocking sound' definition .. Maybe it's actually the Campro engine's sound , which tends to be very low frequency/bassy (making you think it's knocking) ? Cause I do hear some "knocking" (for lack of a better word) sound during acceleration, but I never though much about it, because so far power is good, consistent, and no deterioration in performance.
Jan 8 2015, 10:09 PM
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