synthetic racing oil?
i have been running rp racing 21 oil for a couple of years. was wondering if there was a similar oil that you could buy for under $10/quart. was looking at the valvoline full synthetic 10w/30 oil racing oil. i checked the price at o'reilly's $9/quart. i love the royal purple but just trying to find something a little less expensive. any help would be greatly appreciated. thanks jason i run a 327/275 ss combo
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