Post your latest boat or PWC oil and filter change

[mobilnissan1991]

2013 Merc 60 four stroke that hasnt been ran in a few years
Pumped out old gas
3 quarts Lucas 25W40, Merc filter
New thermostat
New inline and spin on fuel filters
Supertech 80W90 Marine in foot
New Champion spark plugs
New Everstart 1000 MCA battery
Went to start and starter is dead. Waiting for new starter

 

[MurkyAsparagus]

2018 Kawasaki STX15f w/ ~100 hrs

Out: Liqui Moly 10w40 PWC and WIX 51358
In: Shell Rotella T6 15w40 and WIX 51358 XP

Made the switch to Rotella T6 this time around. I spoke w/ Kawasaki engineers and they said as long as it meets the JASO MA2 an SP ratings it will be fine. The viscosity it slightly different, but the jet ski is never out under 50 degrees. Rotella T6 is about 50% the cost of the Liqui Moly. Switched to XP filter for the higher flow rate on this little high revving engine. I don't think the worse micron rating will have any long term effect on the engine. Oil coming out had about 50 hours, looked dark, but not black. Very happy in comparison to before the Liqui Moly. Purchased the ski with 18 hours, changed oil with Kawasaki 10w40 and Kawasaki OEM filter, oil was conventional. Blacker than can be. Changed out again with same oil and filter, then switched to Liqui Moly and WIX.

 

[1978elcamino]

two seadoo 1630 NA 170hp Rotella 15w40 and a cheap amazon filter

 

[OVERKILL]

Honda BF 9.9 (haven't replaced this yet!)
Out: Motul 0W-30, FRAM filter
In: Motul 0W-30, FRAM filter

Out: Castrol 85W-90
In: Valvoline 75W-90

 

[SwampDweller]

2024 Yamaha F70 Four Stroke.
New engine, first oil change. Estimated 25 hours.
Fram FE7317 and Mobil Delvac 15/40
Also changed out the lower unit oil. Almost a full quart of Yamalube 80/90

 

[Allaned]

Not oil but replaced the Yamaha brand water separating fuel filter that feeds the F150 outboard with a new one. Fixed a rough idle that developed over the winter. Must have been a little water in that year old filter.

 

[A310]

1989 Ford 2.3 Marine engine, Fram PH8A and Shell Rotella T4 15W40.

 

[Silverado12]

1999 Chaparral I/O Mercruiser outdrive with a Chevy 4.3 motor: Five quarts Rotella T4 15W-40, Champ PF47 filter. Outdrive: Mercruiser straight SAE90 gear oil.

 

[SCOOTERTOM69]

2008 Yamaha F115 on Bennington pontoon. 340 hours on motor, 50 hours on oil. 100 hour service.

Out: Mobil Delvac 1300 Super 15w-40
Fram TG7317 filter

In: 4.5 qts Mobil Delvac 1300 Super 15w-40
Fram TG7317 filter

Also replaced spark plugs, fuel / water separator filter, engine fuel filter and lower unit lube (1 qt Yamalube 80w-90)

 

[6.7_22]

21’ Boulton Sport Jet Fishing boat
350 sbc Fuel injected
Kodiak 3 stage jet pump
25hr oci

Out: Valvoline Premium Blue 15w-40
Wix 51060

In: Same

 

[thetricky]

1999 Monterey 180, Volvo Penta 3.0L and SX Cobra drive, new to us boat.
Out: No idea. Thick, pitch black, oddly stinky nastiness in both motor and outdrive.
In: Mobil Delvac 1300 until the HPL HDEO shows up, supertech filter. Amsoil marine gear lube for the outdrive.

 

[MurkyAsparagus]

1990 Mastercraft Prostar 190 with 351w engine. This engine has 600 hours.

Off: Unknown oil and NAPA Gold 1515.
In: M1-301a and M1 Delvac Extreme 15w40.

I’ve never ran an M1 filter or even M1 oil. It has never been my cup of tea. However, it is probably the second best option for the money and is available locally. The best option for the money, IMO, is ST 15w40 full synthetic and a B2 filter or similar from RA.