80 mercruiser 470 lower unit oil?
Me and my buddie were changing the lower unit oil in his 1980 mercruiser 470 alpha one? We pumped in 1 qt. and none came out of the top hole. My question is should we get more oil and keep going till oil comes out or is 1 qt. enough? we were told 1 qt. is the proper amount but dont want to fry the lower unit either.
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