Engine Service Interval - 4JH3E

[FraidNot]

Finding some conflicting info.
Recommendations welcome on oil, oil filter and fuel filter intervals.
Change based on:
Hours, or
Months
What intervals do you recommend?

Oceanis 411 - family weekend bay cruiser - perhaps 4 hours each weekend max

Environment - Brisbane, QLD - subtropical

[sailing now]

The manual for our Yanmar (4JHTE) recommends changing oil, oil filter and transmission oil every 150 hours. We change fuel filters when the vacumn gauge shows 5 inches. With your usage I would service a minimum of annually.

[rusky]

Hiya FRaidknot,
We are on the Coomera R and have the 4JH2-UTE. I change oil at every 150hrs. Which 4JH3? ? I have the service manual for the TE, the HTE & DTE. This may be a headstart, YANMAR Diesel Power - JH3/JH4 Series Marine Engine

[Hud3]

If you're putting less than 150 hours a season on the engine, just change it before you lay it up for the winter, even if you've only put 50 hours on it. Fresh oil over the winter is a good thing to do for your engine.

[jkleins]

Originally Posted by Hud3

Fresh oil over the winter is a good thing to do for your engine.

I have heard this from others who routinely winterize their boats. I am new to the cold storage thing so I was planning to change mine in the spring when I go over everything else on my checklist after winter. What would be the advantage of changing it now?

Jim

[Vasco]

Originally Posted by jkleins

I have heard this from others who routinely winterize their boats. I am new to the cold storage thing so I was planning to change mine in the spring when I go over everything else on my checklist after winter. What would be the advantage of changing it now?

Jim

They say it's not good to let the old oil with its acid,moisture and/or sludge due to additives and detergent being broken down, sit in the engine over the winter. We always change the oil before haul-out.

[Chief Engineer]

What Vasco said