Mixing two cycle oils

waterbill

Petty Officer 2nd Class
Joined
Apr 4, 2003
Messages
106
Is it ok to add a different brand of BIA certified TC-W two cycle oil to a reservoir half full of Yamalube? I was looking through some notes I took in an outboard engine repair class years ago, and I had written down "don't mix oils". Too late. I just added a pint of Citgo TC-W two cycle to my engine's internal oil tank. Should I dump the whole thing and start over now? I know this question sounds dumb, but I don't want to make an expensive mistake.
 

LubeDude

Admiral
Joined
Oct 8, 2003
Messages
6,945
Re: Mixing two cycle oils

The chances of what you did causing any problems is very remote at best. I am not aware of any oil now days that is not compatable with other oils. If it were not I would think it would say on the bottle, IN GREAT BIG LETTERS!
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: Mixing two cycle oils

Moving to General Outboard
 

ZmOz

Captain
Joined
Aug 13, 2003
Messages
3,949
Re: Mixing two cycle oils

Yeah, you should be fine since they're both TCW-3 oils. I mixed some Havoline and Pennzoil last year. Only problems came when I didn't mix anything at all. :D
 

wayne h

Master Chief Petty Officer
Joined
Apr 29, 2003
Messages
862
Re: Mixing two cycle oils

it all comes from the same refinarys just diffrent lables u will be fine lol
 

LubeDude

Admiral
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Oct 8, 2003
Messages
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Re: Mixing two cycle oils

Originally posted by wayne34609:<br />it all comes from the same refinarys just diffrent lables u will be fine lol
The base stock might, but oil is more than base stock.
 

seahorse5

Rear Admiral
Joined
Jan 24, 2002
Messages
4,698
Re: Mixing two cycle oils

One of the TC-W3 requirements is that an approved oil should mix without problems with the reference oil. In that oil test done by Bass and Walleye Boats magazine several years ago, they mixed a number of oils together and looked for any type of reaction; there was none.
 

199675hpforce

Petty Officer 1st Class
Joined
Feb 27, 2004
Messages
299
Re: Mixing two cycle oils

Walmart supertech used to be blue i think it was just like quicksilver now its green? I would not worry about that stuff just put it in there way better than none.
 
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