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Old 06-19-2012, 07:04 PM
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Default Re: anyone familiar with royal purple?

We use the 0W in the Jr Dragster, noticeably different than Mobil 1 synthetic racing oil, and it gets changed every 4 passes (~ 1/2 mile) on average. We like it, and with the rebuild cost of a single cylinder Jr engine equal to that of a SB Chevy engine - we don't mind the cost!
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