Jet pump oil?

[DJGTI]

Can I use a synthetic gear oil?
Or does it have to be sea doo jet pump oil ?

 

[AKnarrowback]

I always run synthetic gear oil and never have had a problem. It's not as expensive as an "official" jet pump oil. I also run synthetic gear oil in the chaincase on all my sleds and it works just fine. The oem gear oil for sleds and DOOs looks incredibly similar and feels the same......

My opinion on pumps is I check the oil a bunch. I swap oil a couple times a season because I'm always experimenting but also know that seals can wear, let water in and I'd like to catch it before the pump fails. I do not consider the jet pump a "fill it and forget it" item, I check it regularly.

 

[DJGTI]

What weight do you run?

 

[vogs77]

I run mobile 1 synthetic gear oil with no issues.

 

[GGuillot]

I use Valvoline full synthetic 75-90w with no issues.

 

[mikidymac]

The only difference with the seadoo or Klotz jet pump oil is they can tolerate some water and still protect the bearings whereas the regular gear oils can't. A lot of people just use Mobil 1.