One of the greatest differences between your experience with Amsoil and other synthetic engine oil will be your education in the proper use to avoid problems. Always flush engines with Amsoil Engine Flush when converting from petroleum oil to Amsoil. Petroleum oils create sludge and varnish on the inside of engines.
Most synthetics are very high in detergent action.
They will break loose the sludge and varnish the petroleum oil made in large particles. These large particles will circulate throughout your engine, potentially clogging oil galleries and ports. No matter how good an oil is, it does you no good if it can't get to all the places it should in an engine. Amsoil has solved this problem with Amsoil Engine Flush. Just get a can for each engine and follow the directions.