Two stroke oil... can you "mix" them??

[waterfoul]

Heres the thing... I sold my Yamaha snowmobile this past fall. But I still have over 1.5 gallons of Yamalube in the garage. I own no yamaha motors... my Tracker has a Mariner (Merc). The yamalube is a semi-synthetic lube... I have no idea what brand or type oil the previous owner ran in my motor (bought the boat from daddyduck here on MS.com and he got it from his father when he passed away). Would it be o.k. to use the yamalube in my Mariner? I normally use standard "dino" oil in my outboards... but I have nearly $25 of this yamalube sitting around. Hate to let it just sit.

I guess I could offer the yamalube up to someone who could use it (and pick it up or meet me somewhere close/at a boat ramp/ etc...) especially since I have 2 gallons of the oil I normally use... which will last me all summer and then some.

Mike

[motcityman]

I use it in my 40 HP 1995 Johnson and dont have any trouble, Infact it burns less smoke and cleaner plugs. I use it all year long from Duck to goose to walleye and salmon fishing. Just my 2 cents.

[hitechman]

that 2 cycle oil for air cooled engines was a no no for use in water cooled outboards, but that it was OK to use the outboard 2 cycle oil in air cooled engines like my lawnmower and chainsaw. Something about the additives and the different operating temperatures of the 2 different types of engines.

I'm definitely no expert, but the above is a quote from the manager of the marine repair and service department where I purchased my boat and motor.

Taken from: http://www.lubedealer.com/syntheticoildealer/ ...............Outboard 100:1 Pre-Mix 2-Cycle Oil contains lower temperature dispersants and is for use in water cooled outboard motors in which the oil is pre-mixed with the fuel.

This site discusses it pretty thoroughly: http://www.theultralightplace.com/choosing_oil.htm

Steve

[hitechman]

interesting page on diagnosing engine problems by the appearance of the plugs (pictures): http://www.theultralightplace.com/sparkplugs.htm

Steve

[WALLEYE MIKE]

Air cooled oil does not go into water cooled equipment.

Air cooled for aircooled equipment

Water cooled oil for water cooled equipment.

[Mister ED]

WF - I think what Hitech and Mike are saying is: What rating is on your Yamilube?? Does it say TCW-3? If so, it will be fine in your motor. If not it is probably rated for air cooled engines. As noted, they both have different properties.

If it is rated TCW-3 ... run your tank down low then make the switch.

If it is rated TCW-3, and you do not want it ..... I know a Yammie that would drink it.

[WALLEYE MIKE]

:yeahthat: WF - I think what Hitech and Mike are saying is: What rating is on your Yamilube?? Does it say TCW-3? If so, it will be fine in your motor. If not it is probably rated for air cooled engines. As noted, they both have different properties.

If it is rated TCW-3 ... run your tank down low then make the switch.

If it is rated TCW-3, and you do not want it ..... I know a Yammie that would drink it.

:yeahthat:

[waterfoul]

My yamaha was a water cooled snowmobile. I'll have to look at the bottle to see what the rating is.

[alex-v]

interesting page on diagnosing engine problems by the appearance of the plugs (pictures): http://www.theultralightplace.com/sparkplugs.htm
Does this apply to both 2-cycle plugs and 4 cycle?

[hitechman]

Does this apply to both 2-cycle plugs and 4 cycle?

I would think so since the oil is "not supposed to burn", but rather coat the cylinder walls.

The 7th picture down shows a plug with poor oil control. I actually printed this page off, laminated it, and have it hanging in the garage for future reference.

Steve

[brianroy6]

Yamalube will be 100% ok in your boat motor.