I'm picking mine up from Philadelphia and immediately driving it 850 miles back to my home in GA. I am not worried about it. This is not the 1970s.. just drive it.
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Back when I was growing up acceleration helped to seat the rings, so steady speed wasn't recommended without periodic acceleration. Not sure about today but I think it still makes sense. You might want to ask a search engine for the answer.I am picking up my Maverick tomorrow. I had always planned to take it on a long weekend trip this weekend (800+ miles round trip over 3 days), but because there was a 2 week shipping delay, that trip now falls into the break-in period. No towing or hauling, but I will be be doing interstate speeds up to 75-80 mph. Should I skip taking the Maverick this weekend and take my wife's minivan, or is that just overly cautious?
This brings us to how the engine should be run after initial startup. The ideal combination is to tune the engine so that it starts on the first or second revolution. For carbureted engines, this means pre-filling the fuel bowls and accurately setting the initial timing. As soon as the engine starts, immediately bring it up to an above-idle speed. According to JE’s Senior Technical Account Manager Alan Stevenson, “You don’t want to break-in an engine at idle. You want to keep the rpm above 1,500 and vary the speed continuously for about the first 20 minutes.” After bringing the engine up to normalized coolant and oil temperature, put the engine under load. The cylinder pressure from 50 to 75 percent and eventually to 100 percent load will place additional pressure on the back side of the rings which will quickly establish the proper wear pattern for seating. With today’s rings, especially moly-faced versions, this can be achieved in a very short period of time and certainly within 20 to 30 miles of street driving. In WOT dyno testing, likely the rings are seated by the end of the first few runs.Back when I was growing up acceleration helped to seat the rings, so steady speed wasn't recommended without periodic acceleration. Not sure about today but I think it still makes sense. You might want to ask a search engine for the answer.