Sea Doo 2015 Sportster Le Manual
Finally, after 7 years of paying an arm and a leg for yearly oil changes on my 2008 Speedster 150 (4-stroke Rotax), I decided to do it myself: got all the needed equipment, except the manual calls fro 10W40, but the only closest oil I could find at the nearest (10 miles) West Marine is Pennzoil Heavy-Duty Multigrade 4-Cycle engine oil, SAE 15W40. The 15W40 specification sound pretty close to the required 10W40, but I am still unsure if I should go ahead and safely use it (instead of 10W40). Any expert advice would be greatly appreciated! Doesn't the manual say 5W40 or 10W40? I would avoid going thicker unless the engine is flashing an oil light at idle and I wanted to get a few more hours out of it. Although, 15W40 is close enough it might not make a difference if you warm it up good and run in warm water.
Assuming you really don't want to spring for the BRP Seadoo oil there are plenty of other 10W40 oils out there, the Wal Mart Supertech brand is good oil, or Rotella T6 5W40 might be my choice. Of course I always install an oil pressure gauge on my motors, I hate not knowing what's going on. The oil needs to have the correct additive package, so the SC clutch washers will function properly. If OEM says it does, then it does.
2015 sportster le - posted in LE DI/4 Year of DOO: 2015; Model of DOO: Islandia SE; Posted 09 April 2015 Need a shop or part manual for your boat or PWC? Title 2015 Sea-Doo Sportster LE Factory Service Sea. 2015 Sea Doo Sportster 4 TEC Owners Manual.
From there it's up to you, and changing the oil at least every fall or when it becomes fuel contaminated/damaged due to heat are the most important, IMO. Marine engines are more subject to fuel dilution due to the heavier loads (especially puffer motors), it takes a lot of fuel to push that water (see MPG for proof), fuel contains sulfur and blow-by is greater under heavy loads, mix fuel sulfur with the moisture in bilge air and you have an sulfuric acid to eat your bearings while sitting in the cold sweating/condensating weather during the off season.
I doubt using synthetic can compensate much if at all, for contamination loading. So sniff the stick and see if it smells of fuel and when changed, if yes then definitely you waited too long or there's a problem. Bottom line, change your oil. I'm not sure whether you have a supercharger or a non supercharger engine, but when I used to have speedster 150 non sc, I used rotella T6 full syntethic (i belive it's 5w40). You can get it cheap at walmart.
2001 Seadoo Sportster Le Manual
How to repair briggs and stratton. As for the supercharger, you are not supposed to use full synthetic oil but a semi synthetic. So now I use castrol actevo semi sythetic oil. I usually put a level on top of the engine and I adjust the height on the trailer accordingly. On the water, the boat is leveled so you can get more accurate oil reading.