I have 110,000 miles on the Honda 2.4L now and over the last few months I've noticed a loud tick on cold start ups. It eventually goes away once the car is warmed up. The oils used during this time were M1 0w20 and 5w20 EP. I became so used to hearing it that I figured it was due to the engines age.
This weekend I ran a bottle of Amsoil engine flush for 15 minutes. I just let the engine idle @ around 900-1,500 rpms. I then installed Amsoil 0w-20 and much to my surprise the ticking is gone. I honestly forgot how quiet this engine used to be.
I'm not sure if it's from using the engine flush, or the ASM, but the engine is so quiet now on cold start up. No ticking sound at all. It could have been the Mobil 1, flush or ASM so I'm not really sure what fixed the problem but I'm very happy with the way the engine sounds now. I've used many different oils in this engine and they all were about the same in terms of noise etc. Whatever took the noise away, I'm glad it worked.
This weekend I ran a bottle of Amsoil engine flush for 15 minutes. I just let the engine idle @ around 900-1,500 rpms. I then installed Amsoil 0w-20 and much to my surprise the ticking is gone. I honestly forgot how quiet this engine used to be.
I'm not sure if it's from using the engine flush, or the ASM, but the engine is so quiet now on cold start up. No ticking sound at all. It could have been the Mobil 1, flush or ASM so I'm not really sure what fixed the problem but I'm very happy with the way the engine sounds now. I've used many different oils in this engine and they all were about the same in terms of noise etc. Whatever took the noise away, I'm glad it worked.