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XPS Synthetic oil got mixed with tiny amount of TCW3 okay to use?

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Hello everyone,

Previous owner was using TCW3 and not XPS synthetic oil, I used a drill pump to get all the TCW3 oil out of the tank, however there was some super tiny amount left in the tank and oil lines. I added Synthetic XPS oil in the tank is this okay to use or would the XPS synthetic mixed with the tiny amount of TCW3 in the lines cause a chemical reaction that would damage the engine? Do i need to Take the XPS oil back out and get rid of it since its mixed with a tiny amount of TCW3? I don't want to be out $60 CAD for the XPS oil that got mixed with the tiny amount of TCW3 but if its gonna cause damage ill just pump it out and throw it away and disconnect all the oil lines and replace them before putting XPS oil.


Thanks in advance !
 
If the previous owner was using the TCW3 exclusively, I can see how the small amount left in the lines is going to be a problem. Are you sure XPS is required for your machine?
 
If the previous owner was using the TCW3 exclusively, I can see how the small amount left in the lines is going to be a problem. Are you sure XPS is required for your machine?

Its a 96 challenger with a single 787 so it requires xps synthetic previous owner was using wrong oil, tcw3 makes the rave valves extremely dirty (I’ve cleaned them) my concern is i read somewhere if a mix of tcw3 and xps synthetic happens it can cause a chemical reaction that causes the oil to sludge.. this has me concerned as there was a bit of tcw3 in the lines and a super super tiny bit in the tank before i added the xps synthetic
 
Stop the presses!!!... Please,,,In my 800 cc LTD class racing ski.....rev'ing 7700,,,we will use the cheapest 2 stoke synthetic oil available to us,,,often it came from the Walmart oil section,

My concern is more the fact that i will have xps synthetic mixed with a tiny amount (what remained in the lines tcw3) going into the engine. Would this cause the chemical reaction i read about that causes the oil to sludge and the engine to crap out ?

Thanks!
 
If you are really concerned,,,let it sit for 24 hours,,,the oil will mix into self,,,like adding cream into your coffee,,,you don't stir it...(brownian motion of chemistry),,,,, then bleed the oil for say 30 seconds...place a rag under it,,,to keep your hull clean,,,
Perhaps for the first ,,,10 minutes,,,just go on plane,,,so she doesn't load up too much on the bottom end...and then giv'er,,,.
Trust me,,,there hardly is a researched /article/ thread,,,in fact there were NONE!,,where the correct/incorrect oil differential,,,caused a seizure in the motor,,,
I would be so lucky as would be my racing bud's.

The dealers have you terrified,,,once again..my first place to buy our synthetic 2 stroke oil for our race motor,,,is the oil section of Walmart,,,we once got a huge deal,,,getting a 7 litre container of 2 stroke SYNTHETIC. Oil,,for sleds',,it was winter,,,,same stuff,,,deal of the century!!,,like around $35 bucks,,,If it's synthetic,,,and it's 2 stroke,,,AND it's cheap,,,buy it,,,your motor will not notice the difference,,you will not notice the difference,,,
,if you want to take a look at the pto rav valve,,,then do so...but stock configuration motors run much cleaner at lower then race motors,,,since we are on premix,,,from the bottom...at idle,,,to wot...!
I have no idea if the tcw3 the previous owner was using is synthetic but i did notice its blue compared to the red xps. so i shouldn't dump the 5 quarts of xps synthetic that i put in and that might have been mixed with a tiny amount of tcw3 and just run it right ?
 
I have no idea if the tcw3 the previous owner was using is synthetic but i did notice its blue compared to the red xps. so i shouldn't dump the 5 quarts of xps synthetic that i put in and that might have been mixed with a tiny amount of tcw3 and just run it right ?

I recently revived a non running ski (4 years sitting) and drained most of the red (not sure of brand) oil in my 787 and replaced it with amsoil marine synthetic, which is blue TCW3. On the jug it says its for every ski except seadoo. When i first started the engine it was very smokey. After running in the water for 15 min it really cleared up. Not sure if its dirtying my rave valves but i assume the smokey condition was caused by the old red oil in the lines and that the smoke cleared up once the new oil cycled in. If smoke equals dirty rave valves then the new amsoil should be much cleaner.
 
Stop the presses!!!... Please,,,In my 800 cc LTD class racing ski.....rev'ing 7700,,,we will use the cheapest 2 stoke synthetic oil available to us,,,often it came from the Walmart oil section,
Sacrilige.... :D It's actually what is called a ONCE THROUGH oil. Only lasts a second. LOL I think most skis down here in the south run the blue outboard stuff. That's all I see in the skis I buy and restore. :)
 
I recently revived a non running ski (4 years sitting) and drained most of the red (not sure of brand) oil in my 787 and replaced it with amsoil marine synthetic, which is blue TCW3. On the jug it says its for every ski except seadoo. When i first started the engine it was very smokey. After running in the water for 15 min it really cleared up. Not sure if its dirtying my rave valves but i assume the smokey condition was caused by the old red oil in the lines and that the smoke cleared up once the new oil cycled in. If smoke equals dirty rave valves then the new amsoil should be much cleaner.
Well you are using the wrong oil and should be using Amsoil Interceptor.

I have no idea if the tcw3 the previous owner was using is synthetic but i did notice its blue compared to the red xps. so i shouldn't dump the 5 quarts of xps synthetic that i put in and that might have been mixed with a tiny amount of tcw3 and just run it right ?

Yes, you risk ruining your engine. The two different oils are very will know to gel and starve the engine of oil. This typically happens in the oil filter.

If it was me I would leave your new oil in the tank, install a new oil filter after letting the oil line drain at the hose going into the new filter before you install the new filter. Then open the bleed screw on the oil pump until the new red oil flows out. Then you should be good to go.
 
Well you are using the wrong oil and should be using Amsoil Interceptor.



Yes, you risk ruining your engine. The two different oils are very will know to gel and starve the engine of oil. This typically happens in the oil filter.

If it was me I would leave your new oil in the tank, install a new oil filter after letting the oil line drain at the hose going into the new filter before you install the new filter. Then open the bleed screw on the oil pump until the new red oil flows out. Then you should be good to go.

Oh I just followed what the manual said it requested for XPS oil and since I have a seadoo dealer near me it was easy to get compared to the Amsoil which is harder to get here in Canada.

Ill drain the lines and change the oil filter just to be safe. Thanks!

Also do i need to worry about the XPS in the tank that got mixed with a super super tiny amount of tcw3 that was left at the bottom of the tank ?
 
If you are really concerned,,,let it sit for 24 hours,,,the oil will mix into self,,,like adding cream into your coffee,,,you don't stir it...(brownian motion of chemistry),,,,, then bleed the oil for say 30 seconds...place a rag under it,,,to keep your hull clean,,,
Perhaps for the first ,,,10 minutes,,,just go on plane,,,so she doesn't load up too much on the bottom end...and then giv'er,,,.
Trust me,,,there hardly is a researched /article/ thread,,,in fact there were NONE!,,where the correct/incorrect oil differential,,,caused a seizure in the motor,,,
I would be so lucky as would be my racing bud's.

The dealers have you terrified,,,once again..my first place to buy our synthetic 2 stroke oil for our race motor,,,is the oil section of Walmart,,,we once got a huge deal,,,getting a 7 litre container of 2 stroke SYNTHETIC. Oil,,for sleds',,it was winter,,,,same stuff,,,deal of the century!!,,like around $35 bucks,,,If it's synthetic,,,and it's 2 stroke,,,AND it's cheap,,,buy it,,,your motor will not notice the difference,,you will not notice the difference,,,
,if you want to take a look at the pto rav valve,,,then do so...but stock configuration motors run much cleaner at lower then race motors,,,since we are on premix,,,from the bottom...at idle,,,to wot...!

While you are free to use whatever oil you like in your skis please don't tell people to use oil that is not correct or spec for their skis. There are plenty of reasons why seadoo chose to keep the API-TC rated requirement and years of reason and proof as to why.

It has also been very well documented of the mixed oil gelling in the filter and plugging up the oil system.
106.jpg
 
Oh I just followed what the manual said it requested for XPS oil and since I have a seadoo dealer near me it was easy to get compared to the Amsoil which is harder to get here in Canada.

Ill drain the lines and change the oil filter just to be safe. Thanks!

Also do i need to worry about the XPS in the tank that got mixed with a super super tiny amount of tcw3 that was left at the bottom of the tank ?

The little bit in the tank should be flushed out when you purge the line before installing the new filter as I suggested.

You don't have to run specifically XPS oil but you do need to run an API-TC rated full synthetic oil in your 787. Your choices are Mystic JT-4, Amsoil Interceptor or Seadoo XPS 2T E-Tec. As they all have different additive packages it is not recommended to mix two different brands of oil.
 
Also please note that i did use a drill pump to get the oil out of the tank before putting the XPS however there was still a tiny bit of residual that the pump would not pick up. Im wondering if that tiny amount (1-2 teaspoons) at most mixed with my xps will cause a problem if so ill dump the whole tank of new xps [emoji17]
 
There is always that chance and you will have to decide what to do. In theory that little bit should stay in the bottom and come out when you purge the line.
 
One other option if you're filling up for the first time is Quicksilver 2-Stroke PWC Marine Engine Oil 1 Gallon 8M0058908 available at WalMart. @ $40/gallon and free shipping its a good bit cheaper than the SeaDoo brand and clearly states it meets or exceeds manufacturers specs. It's full synthetic too.

There is some debate about that Quicksilver oil....
Quicksilver used to make an oil that was specifically API-TC full synthetic and even said seadoo on the bottle and a separate TCW-3 oil. Then a few years ago they came out with the new label that just says it meets all requirements but only lists JASO FD and ISO EGD specifications. Just for reference there is no such thing as a dual rated oil as the specs and additive packages are completely different between API-TC and TCW-3 so use at your own caution.
 
One other option if you're filling up for the first time is Quicksilver 2-Stroke PWC Marine Engine Oil 1 Gallon 8M0058908 available at WalMart. @ $40/gallon and free shipping its a good bit cheaper than the SeaDoo brand and clearly states it meets or exceeds manufacturers specs. It's full synthetic too.
YOu can get Lucas Full Snythetic that meets and exceeds requirements for $30 a gallon. I use the synthetic blend because it is easier to get in our area at the moment. It's $26.99 or less. You can get if from O'Reilly's Auto Parts. I called Lucas Oil and talked to the representative about all this stuff. I'm perfectly comfortable running the Blend as it exceeds API-TC and JASO requirements. You gotta do what your comfortable with. Good Luck !
 
YOu can get Lucas Full Snythetic that meets and exceeds requirements for $30 a gallon. I use the synthetic blend because it is easier to get in our area at the moment. It's $26.99 or less. You can get if from O'Reilly's Auto Parts. I called Lucas Oil and talked to the representative about all this stuff. I'm perfectly comfortable running the Blend as it exceeds API-TC and JASO requirements. You gotta do what your comfortable with. Good Luck !

And the Lucas is blue in color which really throws us oil snobs off, LOL!
 
Messed me up too but I know these cajuns down here ain't running the expensive stuff. LOL And they ain't wearing their COVID maskes either. LOL

7ef630b10b54cc47e34ee1f05bc60b48.jpg
 
Thanks @mikidymac. I appreciate your experience and willingness to help others (not to mention your carb thread). I will keep using this for the summer and perhaps over the winter consider switching to another brand.
 
Well you are using the wrong oil and should be using Amsoil Interceptor.
on the amsoil website it recommends the oil i bought and the injector oil...amsoil 1997 gtx.JPG
after reading the description of these two above oils and the interceptor im confident they should all be fine in our 787 engines. im actually wishing i went with the injector oil, since its a bit less $. After I rebuild I will probably go with the interceptor though.
 
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