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No, you will still be creating damage with no oil pressure regardless, but I have seen engines run with no oil for a while. I had an AMC 258 in a Sprint where I blew the #6 rod out of the block, lost all the oil, and it still ran for a good 10-15 minutes until I shut it off!f the engine is really old and loose, you probably have low oil pressure not 'no' oil pressure. Keep it full of oil and don't push it too hard and it might run for a long time. If you really have no oil pressure the engine will freeze up faster than I can answer this question. bob_whelan1944 Â· 9 years ago. Thumbs up.
Dark oil is not only dirty; it has also lost much of its ability to coat and protect engine components. Manufacturers recommend changing the oil in your small engine after every 25 hours of operation. For a new engine, you'll also need to change the oil after the first five hours of operation.New engines require this extra step to flush out small particles that accumulate naturally during the break-in period.riggs & Stratton lawnmower oil is formulated to meet the unique demands created by air-cooled 4-cycle engines. Tested and approved by Briggs & Stratton engineers. Warranty certified and recommended in all Briggs & Stratton manuals.