Oil in petrol

[jvbram]

I have a 1960 Ransomes tractor mower that uses a JAP side valve engine. On the petrol tank cap is written "One gallon of petrol four measures of oil". Is this normal ? If so, I was thinking of using modern smokeless 2 stroke oil. Is a measure a pump from an oil can or maybe an ounce?

 

[Jetronic]

can be the petrol cap is the measure

 

[edhackett]

I have a 1960 Ransomes tractor mower that uses a JAP side valve engine. On the petrol tank cap is written "One gallon of petrol four measures of oil". Is this normal ? If so, I was thinking of using modern smokeless 2 stroke oil. Is a measure a pump from an oil can or maybe an ounce?

What model engine? Manuals can be found online. Here's one for models 4-6. The preview shows a recommendation of 1 tablespoon per gallon.

https://www.emanualonline.com/engin...6-operators-and-parts-manual-emo-102145.html#

Ed

 

[jvbram]

Thanks Jetronic and Ed, It's a 4/3 but the cap has a deep reach under it would hold too much oil. Let alone 4 caps.
The tablespoon per gallon sounds about right. I'll try it
Jack

 

[SwampSurvivor]

Is it a 2 stroke engine or just one that wants oil in the gas?

 

[jvbram]

A side valve engine is a four stroke