Is it safe to mix yamalube and synthetic 2 stroke motor oil?

woodsyfeller

Petty Officer 2nd Class
Joined
Aug 15, 2011
Messages
182
I have a 2001 150 Yamaha HPDI 2 stroke. Low oil warning came on only had a gallon of penzoil synthetic 2 stroke oil to pour into reservior tank . I got 2 gallons of yamalube to fill the reservour tank. I was wondering if I should pour out the penzoil 2 stroke or go ahead and fill tank with the yamalube? Should I just run the penzoil through then fill up with yamalube when low oil warning comes on? Should I just top it off with the yamalube and call it good .

Don't know if I'm over thinking this, I just wasn't sure if it was a bad idea to mix synthetic and yamalube.

They are both TC-W3 rated so I think I should be ok just wanted some feedback on what I should do.
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: Is it safe to mix yamalube and synthetic 2 stroke motor oil?

What does you Owner's Manual say? Most DFI outboards require something more than just TC-W3.
 

woodsyfeller

Petty Officer 2nd Class
Joined
Aug 15, 2011
Messages
182
Re: Is it safe to mix yamalube and synthetic 2 stroke motor oil?

Manual says to use NMMA certified TC-W3 2 stroke oil if yamalube is not available. I know the 2 stroke oil I put in is safe to use on motor .I was just wondering if its ok to mix the synthetic oil with yamalube. the holding tank will hold up to 3 gallons I currently only have 1 gallon in it with the penzoil synthetic.
 

99yam40

Fleet Admiral
Joined
Sep 7, 2008
Messages
9,127
Re: Is it safe to mix yamalube and synthetic 2 stroke motor oil?

I would drain it out of the water trap and save it for later , then put the Yamaha lube in
 

Capt Ken

Commander
Joined
Jul 30, 2002
Messages
2,270
Re: Is it safe to mix yamalube and synthetic 2 stroke motor oil?

Not always safe to mix synthetic with non synthetic. I've seen the chemicals in synthetic react strangely years ago.
 

woodsyfeller

Petty Officer 2nd Class
Joined
Aug 15, 2011
Messages
182
Re: Is it safe to mix yamalube and synthetic 2 stroke motor oil?

I think I will just run the synthetic blend through then refill with yamalube. Ill just have to be sure to keep extra yamalube in resivior tank and to have yamalube on hand to prevent this from happening again.
 
Top