My Toyota Echo 2005(1NZ-FE engine) manual calls for 5w-30 oil. After reading of thin oil benefit, I try using Amsoil ASM 0w-20. The car used Mobil 1 before the change.
First few hundred kms after the change, it seems the car has no torque, even it may spin faster on high rpm if it is driven alone. The issue is the car engine sounds louder after 2000 km, and then I drain the oil and put back new ASM. After the change, the cars seems running well, pull faster from low rpm, however the torque still missing and sometimes when the engine is hot during hot weather (35 celcius) and start the engine, the car seems lack of compression and cranks longer, even it still can be started during one crank.
After another 2000 km, the engine also sounds harsher and develops pinging during the low rpm pulls.
Then I flush the engine oil, and go back to Mobil 1, and it seems the engine torque is back, and the engine sounds smoother.
With both oils, the engine never consume oil.
I am just wondering if this really shows that 0w-20 is too thin and the pings developed because it burns the oil?
My other question is whether the Redline SI-1 is effective to be used to remove the combustion chamner deposit ?
Please advise. Thank you
First few hundred kms after the change, it seems the car has no torque, even it may spin faster on high rpm if it is driven alone. The issue is the car engine sounds louder after 2000 km, and then I drain the oil and put back new ASM. After the change, the cars seems running well, pull faster from low rpm, however the torque still missing and sometimes when the engine is hot during hot weather (35 celcius) and start the engine, the car seems lack of compression and cranks longer, even it still can be started during one crank.
After another 2000 km, the engine also sounds harsher and develops pinging during the low rpm pulls.
Then I flush the engine oil, and go back to Mobil 1, and it seems the engine torque is back, and the engine sounds smoother.
With both oils, the engine never consume oil.
I am just wondering if this really shows that 0w-20 is too thin and the pings developed because it burns the oil?
My other question is whether the Redline SI-1 is effective to be used to remove the combustion chamner deposit ?
Please advise. Thank you