Royal Purple soon to be in my car (see video on first page)
06-03-2009, 04:27 PM
#21
On The Tree
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Join Date: Mar 2007
Location: Little Rock, AR
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I've used Royal Purple since my first oil change. I love it. I saw a Quaker State Synthetic oil rep at a car show last year. They had a GTO on the dyno. I asked him if it was better than Royal Purple. He would only verify that you could see performance gains by using QS. He would not say that it was better.
