i currently use mobil 1 5w-30, and seeing as how its approaching the warmer months for me, i was going to switch up to 10w-30. i saw this Q synthetic oil from quaker state, and wondered how it stood up again mobil 1? i was also considering going over to Amsoil Synthetic oil, but im not exactly sure yet. What would you fluid expert guys say?

 

This comparative test is straight off the AMSOIL Web site, but it contains info on many products including Mobil 1 Super Syn and Quaker State. Based on this information, I would not use Quaker State since there appears to be better alternatives.

http://www.amsoil.com/performancetests/g1971/index.aspx