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Has anyone tried the exp4 oil addative? I know its hard to belive horses can come in a bottle, but I saw them test it on the speed channel the other day and they were getting some pretty impressive gains from it. Some as high as 5% more total HP from an oil lubricant. I was just curious to see if anyone here has tried it yet.
 

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if you want a good oil, go with Royal Purple...... it has a longer life, 5000 between changes.... and you should get some kind of gain out of it..... i believe its like $7 a quart..... but i found it at a chevy dealership for $5.50........ i wouldnt bother with the oil additives...... but thats my opinion.
 
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