I don't know diddly about jet skis, but a friend of mine asked me this:
I also post on a SeaDoo board, bc I have an 04 GTX Supercharged ski. Bombardier claims that you need/must use the conventional motor oil (which incidently is made and bottled by Castrol and is in fact Castrol GTX) and do not use any synth oils even their brand. The issue is that we have a ceramic coated clutch, disc type compressed between 2 metal concave washers, probably bc of a failsafe device so to minimize any damage if supercharger impellor or shaft failure occurs. The supercharged is directly driven off a gear assy on the crankshaft. Bombardier claims that using a synth will prematurely wear the ceramic coating on the disc(s)and cause slippage/failure and inoperation of the supercharger. I have contacted Darryn in the Tech dept. at Amsoil asking if Amsoil has a synth product that is supercharger clutch compatible, and his quick reply was the 0W-40 Four Stroke oil is recommended for this application and that it IS compatible with the supercharger clutch. There is no friction modifiers in this oil. I brought this info to the attention of a well versed SeaDoo certified tech that I have been in contact with and he would not comment on it being clutch compatible based on his Bombardier certifications and basically just said I should not/don`t use that. I have also contacted an owner of a very reputable ski performance shop and he did say No synth. I trust the Amsoil line of lubricants, and I have been told/read that is was Ok from [AMSOIL person_01]. my dilemma is that I do not know enogh about this to make a descision. I would like to use the Amsoil synth, I feel that it is better. I had e-mailed [AMSOIL person_01] asking him for some kind of proof or technical data, specifications showing that it`s Ok to use with the ceramic clutch, waiting for his response.
Thoughts? Input? Opinions?
I said play it safe and stick to conventional oil until we find out for sure.
I also post on a SeaDoo board, bc I have an 04 GTX Supercharged ski. Bombardier claims that you need/must use the conventional motor oil (which incidently is made and bottled by Castrol and is in fact Castrol GTX) and do not use any synth oils even their brand. The issue is that we have a ceramic coated clutch, disc type compressed between 2 metal concave washers, probably bc of a failsafe device so to minimize any damage if supercharger impellor or shaft failure occurs. The supercharged is directly driven off a gear assy on the crankshaft. Bombardier claims that using a synth will prematurely wear the ceramic coating on the disc(s)and cause slippage/failure and inoperation of the supercharger. I have contacted Darryn in the Tech dept. at Amsoil asking if Amsoil has a synth product that is supercharger clutch compatible, and his quick reply was the 0W-40 Four Stroke oil is recommended for this application and that it IS compatible with the supercharger clutch. There is no friction modifiers in this oil. I brought this info to the attention of a well versed SeaDoo certified tech that I have been in contact with and he would not comment on it being clutch compatible based on his Bombardier certifications and basically just said I should not/don`t use that. I have also contacted an owner of a very reputable ski performance shop and he did say No synth. I trust the Amsoil line of lubricants, and I have been told/read that is was Ok from [AMSOIL person_01]. my dilemma is that I do not know enogh about this to make a descision. I would like to use the Amsoil synth, I feel that it is better. I had e-mailed [AMSOIL person_01] asking him for some kind of proof or technical data, specifications showing that it`s Ok to use with the ceramic clutch, waiting for his response.
Thoughts? Input? Opinions?
I said play it safe and stick to conventional oil until we find out for sure.
