polarisrider1
New member
This is an Amsoil question. What should the oil change frequency be for a pair of 350 cid's with EFI, putting out 300 hp ea. Mercruiser V drives using Amsoil Marine 4 stroke oil and quick silver filters.Also what is the part number for Amsoil filters for this application. normally I change oil each fall with standard quicksilver oil but was wondering with low hrs on boat if maybe 2 years was fine? put less than 25 hours on boat this year.normally put on around 100 hrs. per year.