Please refrain from using any synthetic or synthetic blended oil until after 9,000 miles with your BluePrint Engines.
BluePrint Engines does not find the use of synthetic oils to be necessary, or beneficial. If you must run synthetic, it is only advised after 9,000 miles and only on roller cam engines. Synthetic oils by composition are thin, and “slicker” than fossil oils. They tend to increase leaks and can promote improper break-in. Please take this into consideration before changing to a synthetic oil.
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