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<blockquote data-quote="Johnny O" data-source="post: 553550" data-attributes="member: 61743"><p>Jug of Mobil 1 at Wal-Mart for $20 is a tough deal to beat.&nbsp; I did get used oil analysis from my wife&#039;s Taurus comparing Mobil 1 0w-20 (since replaced by 5w-20) and Motorcraft 5w-20 over 5000 miles and the results were nearly identical.&nbsp; For what it&#039;s worth, the Motorcraft oil is made by Conoco.&nbsp; I figure if I use syn the Arabs get less of my money.&nbsp; Just for kicks you can get a used oil analysis kit from Blackstone Labs.&nbsp; They&#039;ll send you the kit for free, send one back with your used oil and $20 and they&#039;ll tell you what&#039;s up.&nbsp; I had a 4.0 SOHC Ranger before, it liked Mobil 1 5w-30, the wear metals were very low.&nbsp; Once I tried Mobil 1 0w-30 in the winter and the wear numbers were worse.&nbsp; Just an example of what you can find out with a UOA, also it will tell you if there is antifreeze in your oil, sign of a bad head gasket.</p></blockquote><p></p>

[QUOTE="Johnny O, post: 553550, member: 61743"] Jug of Mobil 1 at Wal-Mart for $20 is a tough deal to beat. I did get used oil analysis from my wife's Taurus comparing Mobil 1 0w-20 (since replaced by 5w-20) and Motorcraft 5w-20 over 5000 miles and the results were nearly identical. For what it's worth, the Motorcraft oil is made by Conoco. I figure if I use syn the Arabs get less of my money. Just for kicks you can get a used oil analysis kit from Blackstone Labs. They'll send you the kit for free, send one back with your used oil and $20 and they'll tell you what's up. I had a 4.0 SOHC Ranger before, it liked Mobil 1 5w-30, the wear metals were very low. Once I tried Mobil 1 0w-30 in the winter and the wear numbers were worse. Just an example of what you can find out with a UOA, also it will tell you if there is antifreeze in your oil, sign of a bad head gasket. [/QUOTE]

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