Low viscosity leaks when cold?

Richard (UK) · Jun 5, 2012

Hi,

I have bought a David Brown 885 which leaks transmission fluid.

This tractor should use 20w 30 or 40 oil for the hydraulics ... but this stuff is hard to find so I bet there is a 15W 30 or 40 or even a 10W 30 or 40 in there.

These modern oils have very low viscosity when cold - which I suspect is making the leaks in my old tractor more obvious!

Is this theory valid?

If so, could I use a "straight 30" oil to ensure that the viscosity doesn"t drop when cold?

rustyfarmall · Jun 5, 2012

The only sure-fire way to stop those pesky leaks is to replace the worn out oil seals.

Richard (UK) · Jun 5, 2012

>> The only sure-fire way to stop those pesky leaks is to replace the worn out oil seals.

Not the answer I was looking for ...

rustyfarmall · Jun 5, 2012

(quoted from post at 10:56:43 06/05/12) >> The only sure-fire way to stop those pesky leaks is to replace the worn out oil seals.

Not the answer I was looking for ...

There are a whole bunch of mouse milk, snake oil, magic potion methods of curing oil leaks, and you are welcome to try all of them, but in the end, you'll still be replacing the worn out seals.

dhermesc · Jun 5, 2012

If so, could I use a "straight 30" oil to ensure that the viscosity doesn"t drop when cold?

I'm not sure what you mean by that. 30 weight at operating temp has less viscosity than 10W30 does at room temperature.

Why do you think you should change your oil after you have warmed it?

Low viscosity leaks when cold?

Richard (UK)

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rustyfarmall

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Richard (UK)

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rustyfarmall

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dhermesc

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