The oil sumps of modern gas engines are getting smaller while the power outputs are increasing. This puts increased stress on the oil in circulation. Many sump levels are controlled automatically by makeup valves. Check the setting of these valves as they can often be set low, which means you do not get the full charge of oil in the sump and face shorter drain periods. Also, make sure you drain the oil cooler as well as the sump during the oil change, as there is often a considerable amount of old oil (up to 10 percent) held up in the pipework just ready to contaminate your fresh oil. (Sandy Reid-Peters, ExxonMobil)
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Machinery Lubrication training.
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