I have been a satisfied Mobil 1 person for quiet some time (never cared about the base stock war), and have run it in my Ford Ranger with what I have assumed to be good results. I read a used oil analysis ( Mobil 1 5w30) about excessive iron numbers in the same engine I have (4.0 SOHC V6). Again, no known problems in my application - but it got me thinking MAYBE I should give something else a try. I was thinking about the following oils - Pennzoil Platinum 5w30, German Castrol 0w-30, Mobil 1 0w-40 (some have claimed it has helped with the timing chain rattle), or the Amsoil group III (XL?) in 5w30. I've chosen these products because they are readily available, and SHOULD be good for 7500 mile OCI's. Thanks
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