You need to be running a full synthetic API-TC oil. The one you bought is great oil, but is mineral based and will gum up the RAVE valve assemblies. I run Mystik JT-4 in mine, as it’s less expensive than the XPS, but there are a few alternatives out there like Amsoil, Lucas, and a couple others.
As far as fuel goes, 87 is fine for a stock motor, and there is no benefit to running premium unless you’re in an area where it’s ethanol free. Contrary to what a lot of people preach, the best fuel to use is actually the lowest octane that will still prevent detonation. Especially if you’re at a higher altitude, the faster flame front of lower octane fuel helps make a bit more power.
If your 95 XP has the 720 engine then the mineral oil you bought is perfectly fine.
For a 95' XP 800 and the 1996 XP you need to run a full synthetic API-TC oil which the one you bought is not.
You can't mix different brands of oil and need to flush the lines and change the filter when you switch brands.
For fuel you only need 87 octane and non ethenol is better if you can find it. You are wasting money on 91 octane unless you have a high compression head.
I have a 97 GTS I just bought recently. I mixed the wrong oils TC-w3 multipurpose 2 stroke Valvoline oil mixed it with Pennzoil synthetic blend (big yellow bottle) XLF TC-w3 NMMA. Marine engine extended life formula. It had about a 1/4 of tank oil of the Valvoline and I added another 1/4 tank of Pennzoil. So 1/2 tank total. Ran it on a full tank of gas. It ran great until last run. Started bogging a lil bit. I know I have to drain all the oil out of the tank. These 717, 718, 720 motors are sensitive and need the proper oil. What else should I do after I drain all the bad/mixed oil out? Before filling the tank back up? Let me know if you can help? Or anyone else reading this forum. Much appreciated Joe GoI have the 717 engine so I need to run the 2T mineral oil.
Please start a new thread and we will help you right away.I have a 97 GTS I just bought recently. I mixed the wrong oils TC-w3 multipurpose 2 stroke Valvoline oil mixed it with Pennzoil synthetic blend (big yellow bottle) XLF TC-w3 NMMA. Marine engine extended life formula. It had about a 1/4 of tank oil of the Valvoline and I added another 1/4 tank of Pennzoil. So 1/2 tank total. Ran it on a full tank of gas. It ran great until last run. Started bogging a lil bit. I know I have to drain all the oil out of the tank. These 717, 718, 720 motors are sensitive and need the proper oil. What else should I do after I drain all the bad/mixed oil out? Before filling the tank back up? Let me know if you can help? Or anyone else reading this forum. Much appreciated Joe Go
Pics of the oils I mixed below.
I just saw your reply a few min ago. I started a new tread under 97 Gts mixed the wrong oils. Appreciate if you guys can help. Thanks.Please start a new thread and we will help you right away.
Make sure you are still supplying the rotary valve with oil. A lot of peoble who have no clue don't do this when going to premix and ruin the engines.
The rotary valve Miki is talking about is a shaft and gear inside the motor. The RV shaft is in a sealed chamber that is flooded with oil. The large line from the oil tank supplies it.Are you referring to the oil cap where you would normally add oil? Which is accessed with the seat lifted I believe?
Also, do you think it's worth de-bypassing adding oil the traditional way? Will it cause issues down the road mixing the oil & fuel?
Thanks for your help![]()
Seadoo and Amazon both show the 2T Carb Mineral oil being in stock and available. I think your local shop just doesn't want to sell it.
You can add the Seadoo XPS 2T E-Tec full synthetic to the mineral and it will mix with zero issues. You can't mix any other brands.
Seadoo doesn't make a blend (semi-synthetic) anymore. In the 720 there is no good reason to run the synthetic over the mineral and both are perfectly good oils for that engine. I have 4 Seeadoo's with two 720's a 787 and a 951 so for me it is easier to just run XPS synthetic in all of them and not have to worry about having and buying two different oils. If I only had a 720, 650 or 587 Seadoo I would just run the mineral oil.Would it be okay to completely switch to a full synthetic or a blend? I would not need to drain any remaining oil as long as I use XPS synthetic oil, correct?
Any negative impacts on the 717 engine by using a full synthetic or blend? I've read it may cause smoke on cold start up due to oil having less viscosity, therefore it may leak into more parts.
Having to premix sort of complicates things so I might return it back to original.