Sears lawn mower / Tecumseh engine

[2K2AcuraTL]

I am in the process of doing the light spring maintenance on my dads Sears lawn mower (crica 1961). I have about 1/2 litre+ of M1 15w50 tri-synth left. Do you think it would it be OK if I were to use this M1 oil and top up with a lighter weight ? Or would that be just a plain bad idea.

Thanks
Jean

 

[msparks]

I wouldn't do it!

gasket seal compatiblity, would be a concern to me.

 

[2K2AcuraTL]

quote:

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Originally posted by 2K2AcuraTL:
I am in the process of doing the light spring maintenance on my dads Sears lawn mower (crica 1961). Jean

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SORRY folks, slight typo...
its 1981 not '61
Jean

 

[Steve S]

Use the mobil in the lawn mower the 15w50 will work great. The oil won't cause any seal problems.

[ March 24, 2003, 05:53 PM: Message edited by: Steve S ]

 

[metroplex]

My dad has almost the same model.

He has an Eager-1 (silver chassis w/ Red engine panels). He uses SAE 10W-30. Tee manual states to use SAE 30 or 10W-30.

I tell him to use Pennzoil API SL 10W-30, cause it has moly and its low temp viscosity will allow it to lube the engine fairly quickly in a cold start.

 

[Steve S]

My motor is the same I have used 15w50 Mobil1 Amsoil 10w30 Delo15w40 they all work fine .The lawn mower part will rot away before the engine wears out. Like my last one did .