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smcgeary · 03-01-2010, 02:20 PM

I am trying to ask this as a yes or no question (which is hard) so I don't start another oil opinion war. I stopped using Mobil 1 0w40 and started using amsoil european 5w40 (easiest enthusiast synthetic for me to get). So far I like the results and have noticed less noise at startup etc. I have heard that this amsoil formula is not as well regarded as the older 10-40 offering. Living in coastal central CA will I have an issue using 10w40 weight synthetic in 01s in the future??

Thanks!

03-01-2010, 02:20 PM	#43
smcgeary Registered User Join Date: Aug 2007 Location: California Posts: 40	I am trying to ask this as a yes or no question (which is hard) so I don't start another oil opinion war. I stopped using Mobil 1 0w40 and started using amsoil european 5w40 (easiest enthusiast synthetic for me to get). So far I like the results and have noticed less noise at startup etc. I have heard that this amsoil formula is not as well regarded as the older 10-40 offering. Living in coastal central CA will I have an issue using 10w40 weight synthetic in 01s in the future?? Thanks!