Coolant and Brake Fluid Type

[SichuanHot]

Is there any word on what kind of coolant and brake fluid will be used? Hopefully the coolant system is easy to DIY every 3 years or so. DOT 4 LV brake fluid should be the standard though with regen, wet boiling point specs shouldn't be too big of a concern.

 

[E90400K]

I'm not sure why the battery cooling system would need periodic maintenance every 36 months. My MY'22 ICE truck calls for coolant service at 200,000 miles or 10 years.

 

[KJRaven]

Is there any word on what kind of coolant and brake fluid will be used? Hopefully the coolant system is easy to DIY every 3 years or so. DOT 4 LV brake fluid should be the standard though with regen, wet boiling point specs shouldn't be too big of a concern.

the data sheet for the drive motor that looks to be the one slate is using (https://www.slateforums.com/forum/t...gwarner-in-slate-prototype-video.13170/)calls for a 50-50 mix of water and Ethylene Glycol for both the motor and inverter (https://www.cascadiamotion.com/idm-190.html)... so it is your typical green very basic coolant, I would assume that the battery would use the same coolant if it is water cooled.
you are likely going to need a vacuum filler to purge the air out if you were to DIY it.

 

[SichuanHot]

the data sheet for the drive motor that looks to be the one slate is using (https://www.slateforums.com/forum/t...gwarner-in-slate-prototype-video.13170/)calls for a 50-50 mix of water and Ethylene Glycol for both the motor and inverter (https://www.cascadiamotion.com/idm-190.html)... so it is your typical green very basic coolant, I would assume that the battery would use the same coolant if it is water cooled.
you are likely going to need a vacuum filler to purge the air out if you were to DIY it.

50/50 is pretty typical for most cars. I guess I'm more curious about the type of coolant like a HOAT, OAT, or IAT. One thing I hate doing is messing with coolant changes. They're always so messy unless using a Venturi valve, which I conveniently have.

 

[E90400K]

50/50 is pretty typical for most cars. I guess I'm more curious about the type of coolant like a HOAT, OAT, or IAT. One thing I hate doing is messing with coolant changes. They're always so messy unless using a Venturi valve, which I conveniently have.

I'll bet you'll never have to service the cooling system.

 

[KJRaven]

50/50 is pretty typical for most cars. I guess I'm more curious about the type of coolant like a HOAT, OAT, or IAT. One thing I hate doing is messing with coolant changes. They're always so messy unless using a Venturi valve, which I conveniently have.

yep, coolant changes are messy! Hopefully they use a long life coolant that we dont need to mess with for 10+ years. One of the reasons im excited about EVs is because of the reduced maintenance, so the less I need to do to maintain this truck the better!

 

[Dorbiman]

If the radiator has a petcock or a downward facing drain plug, coolant drain and fills are no messier than an oil change. Last one I did didn't get a drop of coolant on the ground.

It's when you're really opening up the system (removing hoses, thermostat housings, pulling radiators, etc) that stuff really gets messy imo