SAE30 oil question

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webcraft

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Going to change the gearbox oil in my Kansaki SMP2 gearbox to SAE30

Looks as though Comma Classic would be ideal, but a 5l tin woul be enough for at least 15 oil changes!

Briggs and Stratton do a 1.4l container of their own branded SAE30, but I can't find any info on the API

Does the team think the B&S oil would be suitable?

- W
 
webcraft said:
Going to change the gearbox oil in my Kansaki SMP2 gearbox to SAE30

Looks as though Comma Classic would be ideal, but a 5l tin woul be enough for at least 15 oil changes!

Briggs and Stratton do a 1.4l container of their own branded SAE30, but I can't find any info on the API

Does the team think the B&S oil would be suitable?

- W
Click to expand...
Millers Vintage Millerol 30 is avaialble in 1 litre cans : Vintage Millerol 30 Engine Oil

It is a sae 30 engine oil which is also suitable for gearboxes which require an API GL1 oil
 
webcraft said:
Going to change the gearbox oil in my Kansaki SMP2 gearbox to SAE30

Looks as though Comma Classic would be ideal, but a 5l tin woul be enough for at least 15 oil changes!

Briggs and Stratton do a 1.4l container of their own branded SAE30, but I can't find any info on the API

Does the team think the B&S oil would be suitable?

- W
Click to expand...

What’s the manufacturers recommendation? You say that you are going to change to SAE30?

Normally, oils are defined by (1) viscosity and (2) spec.

My preference is to stick with manufacturers recommendations or something different that has his written endorsement. There can sometimes be surprises by changing oils, that’s the point of testing.

Many people put non-specified oil viscosity and/or spec in their cherished mechanical devices. I’m of the school who thinks that they get away with it by ignorance and luck but recognise that I’m in a minority with this view.
 
Sometimes gear oils with highish numbers like SAE 80 have 'crankcase ratings' of much lower numbers like SAE 30.
 
lw395 said:
Sometimes gear oils with highish numbers like SAE 80 have 'crankcase ratings' of much lower numbers like SAE 30.
Click to expand...
That will always be the case because the viscosity scale used for gear oils is a different scale to the one used for engine oils. As you say, an engine oil at SAE30 is about the same viscosity as a gear oil at SAE85. There are, of course, many differences in the composition of the two types of oil.

Richard
 
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