[wyx087]

On my Leaf 24 '64 reg the reservoir cap says "use only DOT 3". But my Skoda and my Dad's Volvo both use DOT 4. From specification, it looks like 3 and 4 can be mixed, DOT 4 just have a higher boiling point, which should be a good thing. If I can use DOT 4 on Leaf, I can simply buy a 5 litre bottle.

Can I use DOT 4 fluid in gen 1.5 Leaf?

How much brake do I need to buy? Is 1 litre bottle enough?

Thanks in advance.

 

[freddym]

On my Leaf 24 '64 reg the reservoir cap says "use only DOT 3". But my Skoda and my Dad's Volvo both use DOT 4. From specification, it looks like 3 and 4 can be mixed, DOT 4 just have a higher boiling point, which should be a good thing. If I can use DOT 4 on Leaf, I can simply buy a 5 litre bottle.

Can I use DOT 4 fluid in gen 1.5 Leaf?

How much brake do I need to buy? Is 1 litre bottle enough?

Thanks in advance.

You probably don't want to buy a large quantity: the opened bottle will absorb mositure.

Probably a 1 litre bottle and two 500mls. Just open what you need.

 

[wyx087]

There’s two other cars my Dad and I are planning to do brake fluid change. They are both DOT 4. Hence thinking to buy DOT 4 5 litre bottle and changing it all in one go.

So question is, can I use DOT 4 on Leaf?

 

[PJM MK]

DOT 3 and DOT 4 Brake Fluid: What's the Difference? – AMSOIL Blog

Says DOT3 and DOT4 are compatible. DOT4 just has a higher boiling point and a slightly lower viscosity due to a different chemical makeup. DOT3 is recommended for 'normal' cars, DOT4 for cars with higher performance braking systems.

 

[wyx087]

Wondering if anyone have DIY'd their Leaf brake fluid change with DOT 4 they had from other cars.


I wouldn't call a 1.6l 100bph 2006 Volvo S40 high performance

 

[freddym]

Wondering if anyone have DIY'd their Leaf brake fluid change with DOT 4 they had from other cars.


I wouldn't call a 1.6l 100bph 2006 Volvo S40 high performance

If you are changing the fluid, have you figured out how to flush through the ABS and Pump (presumably using a scan tool of some description). In my experience, this is the part of the system where the wear debris accuulates.

 

[wyx087]

It’s not that complicated. (Scan tool?)

This is the workshop manual on this:

 

[AlGrsn]

On my Leaf 24 '64 reg the reservoir cap says "use only DOT 3". But my Skoda and my Dad's Volvo both use DOT 4. From specification, it looks like 3 and 4 can be mixed, DOT 4 just have a higher boiling point, which should be a good thing. If I can use DOT 4 on Leaf, I can simply buy a 5 litre bottle.

Can I use DOT 4 fluid in gen 1.5 Leaf?

How much brake do I need to buy? Is 1 litre bottle enough?

Thanks in advance.

DOT 4 is compatible with DOT 3 especially in a total fluid change. DOT 3 is not recommended for a brake system spec’ed for DOT 4.