Quote:
Originally Posted by gpshumway
I would rank all of the oils in a given grade and category very similarly. Which is to say all the top tier synthetics are so close in performance it's pretty hard to tell them apart. So, Pennzoil Ultra, Pennzoil Platinum, Mobil 1 (incl EP and AFE) and Castrol Edge Extended (Edge Ti) all belong on the top tier. Synpower, Edge w/Syntec, and Quaker State Ultimate Durability belong one notch down.
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So how do all of these oils compare to same grade motul, redline, amsoil?