Petralia does an oil change about every 25 full pulls when on the dyno. It’s cheap insurance. He starts with dedicated break-in oil and high-efficiency oil filters that trap particles down to 21 microns. Depending on the type of engine, Petralia might then use either a full synthetic or high-performance mineral base oil and a new filter. The used oil is carefully inspected for any signs of wear or particles, and the filter is cut open to check for signs of damage inside. This is his way of knowing that absolutely nothing is wrong on the inside and the engine is making the best power possible.
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