Quote:
Originally Posted by Icecreamtruk
I do not know the answer to your problem but I will tell you something that I found odd. Oil. You are using a heavier oil (5W30). I know what you are thinking, a thicker oil must protect the engine better since its more resist to heat right? Well, it is also harder to lubricate the engine with it. There is a post in this forum with some tests results trying different oil types. Short answer, use 0W20, always. If you need extra cooling, get an oil cooler, dont put a thicker oil in it. Also, I lived in Chile for 7 years, I know gas can sometimes be really crappy, 98ron is the bare minimum the car needs to run and can sometimes cause knock (early detonation) if quality isnt top notch. I think you may have a combination of a worn down engine (oil possibly) and very shitty gas.
Im affraid the mechanics wont probably find anything wrong with the car and you will be left hunting unicorns. Try an octane booster as suggested earlier in the thread and also try going back to the stock 0W20 oil (and always synthetic, that shouldnt even be a question, you shouldnt even need to mention it).
|
Thanks!!
The oil is the one that use Subaru Service in Chile, they have done the oil change in the maintenance service.......... but i see your point and i going to tell them obout it.
Subaru recomend 95 (RON), but i always use 97 V-Power (close to 98 RON) on my cars. Maybe here the gas is not that good, and that why the car present the issue, but there are no "examples" of the issue in the WRX (FA20 Turbo) in Chile (or my ex-Civic Si K20Z3)...........about that, today call me the shop manager to tell me some "good" news: Another 3 BRZ went for the service (30000 kms, my is only 12000 kms), so they tested them to compare and the 3 cars present the issue, only the owners never notice the knocking sound.... and the manager suggested that maybe is "normal" (Subaru Japan said that is a normal sound too..... and believe me, I never had a car with that kind of "normal" sound and i truely did not want to buy a jingle bell.... pretty sad).
Well, tomorrow they going to try changing the knock sensors.... i really, really hope, crossing finger, that became the solution.
BY!!!