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30 hours last season.

KevJul2019

Jet Boat Lover
Messages
161
Reaction score
37
Points
77
Location
Harrison Twp, Michigan
Boat Make
Yamaha
Year
2015
Boat Model
SX
Boat Length
19
2015 SX192, only put 30 hours since last spark plug/oil change. Should I do that all over again before this season starts??
 
Based on what I’ve read around here, I’m going to have the oil and plugs changed at the beginning of every season.
 
As cheap as it is to do you might as well IMO.
 
2015 SX192, only put 30 hours since last spark plug/oil change. Should I do that all over again before this season starts??
@KevJul2019 ..... I would at least change the oil before I stored the boat. Oil contains suspended acids, water, metal particulate etc. In my opinion it is harmful to the engine to leave this stored in it. The proper process is to heat the oil to operating temperature and using gloves remove the oil filter then drain the oil, then replace it with fresh oil and oil filter then run the engine to circulate the fresh oil. I also run anti-freeze through not only for freeze protection but also because of the rust inhibitors marine AF contains and I also change the spark plugs at this time although doing that in the spring is fine too. Others also fog their engines. I have never left used oil/oil filter in any engine that is stored - particularly if it is for a long lay-up. :cool:
 
In a word: yes.

You have 30 hours, but you also have a season (e.g. 1 year). That means 1 year more for the plugs to get closer to seizing into the block and 1 year more of acids and crap building up in the oil. Cheap insurance... Trust me, one time having a plug stuck in a block and you will never ask again.
 
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