we have a tohatsu MF6HP bought
we have a tohatsu MF6HP bought from new one year ago and we have been having trouble with the engine oil from the beginning.The motor is used as an auxiliary and for trolling on a 13.5 ft boat.The oil pressure light lit 3 times in one year. and when we checked the oil level was below the lower mark. And when starting the engine there would be white smoke. on one occasion the mechanic told us there is nothing wrong with the motor because he let it work in a water tank for half an hour an the oil level remained the same and changed the oil. after we used it for 5 hours the oil level went from maximum to minimum and we checked the oil level the day after to be sure that all the oil will be in the sump. went to mechanic again and this time he did pressure test and compression test and said everything is right its impossible that there is an oil leak. We went for a trial run with the mechanic and we asked him did you put the same grade of engine oil we were using. he said yes 15W 40. as we were launching the boat he saw that the motor was tilted in and he told us that you cant use a 4-stroke motor in that position because the oil goes out of the sump and goes in the piston. he told us to always keep the motor in a level position when in use. i dont know if this is true. we tried the motor for 4 hours and the oil level remained good to maximum. but it took 45 minutes for all the oil to go in the sump after we turned off the engine. is this normal? after how much time you can check the oil level after turning off the engine?
we have a tohatsu MF6HP bought from new one year ago and we have been having trouble with the engine oil from the beginning.The motor is used as an auxiliary and for trolling on a 13.5 ft boat.The oil pressure light lit 3 times in one year. and when we checked the oil level was below the lower mark. And when starting the engine there would be white smoke. on one occasion the mechanic told us there is nothing wrong with the motor because he let it work in a water tank for half an hour an the oil level remained the same and changed the oil. after we used it for 5 hours the oil level went from maximum to minimum and we checked the oil level the day after to be sure that all the oil will be in the sump. went to mechanic again and this time he did pressure test and compression test and said everything is right its impossible that there is an oil leak. We went for a trial run with the mechanic and we asked him did you put the same grade of engine oil we were using. he said yes 15W 40. as we were launching the boat he saw that the motor was tilted in and he told us that you cant use a 4-stroke motor in that position because the oil goes out of the sump and goes in the piston. he told us to always keep the motor in a level position when in use. i dont know if this is true. we tried the motor for 4 hours and the oil level remained good to maximum. but it took 45 minutes for all the oil to go in the sump after we turned off the engine. is this normal? after how much time you can check the oil level after turning off the engine?