I have an 03 Chevy SS I drive almost 100 miles a day to work and back. On the oil cap on my truck said use only Mobil 1. And my lube shop only pour in Castrol Syntec.
I'm currently using Castrol Syntec in my truck since new until I heard some bad things about them. one of them that its not a real synthetic. Is it just as good as other synthetic?
Originally Posted By: importkid1
Originally Posted By: Pablo
Originally Posted By: importkid1
I been hearing on some Mercedes Forums they stated usung Amsoil damage Catalyic Converters to me things don't add up.
Some people just say stuff against Amsoil with zero proof. I fail to see why...
Originally Posted By: Pablo
Originally Posted By: importkid1
I been hearing on some Mercedes Forums they stated usung Amsoil damage Catalyic Converters to me things don't add up.
Some people just say stuff against Amsoil with zero proof. I fail to see why Amsoil 5W-40 would damage a catalytic...
Originally Posted By: Doug Hillary
Hi,
you are best to use an SAE40 oil in this motor
Amsoil's Euro Formula 5w-40 is Approved by Mercedes Benz
I use M1 0w-40 in mine
Regards
Doug
I been hearing on some Mercedes Forums they stated usung Amsoil damage Catalyic Converters to me things don't add up.
I been hearing too many rumors that you can use 0w20 5w20 0w40 5w40 and i'm not sure which one to use. I just want to use the proper oil weight and is recommended by the manufacture spec. According to my owners mannual they didn't tell me the oil weights. and idea? I assume it's 5w40 since thats...
Has anyone try Amsoil 10w30 in below 0 degrees weather I also have 5.3L vortec. I have been experiencing some weird klunking noise during a cold start goes away after 10 mins of warming up.