Coolant Mix

[steve.n]

Aside from slightly lower heat transfer properties does anyone know of any downside to using neat antifreeze?

[DJT]

Thicker, so more load on pump. Cost, although ethyl alcohol antifreeze is still fairly cheap.

30% in water is fine. Change it every 2 years.

[mole42]

ethylene glycol has a lower heat transfer characteristic so it would run hotter. I use 50% in my car. Thanks for the reminder Dave, I haven't changed it this year!

[LAMBRETTLAD]

50% for me

[72BLUE]

Toyota red, 60 water - 40 red. Leave it in for 5 years allegedly, although I might change it at 4 years. Careful though as there are 2 Toyota reds I believe, don't buy the pre-mixed, get the neat stuff for vehicles of our age. Best to do a bit of Googling first, but has been recommended here on the forum many times in the past

Cheers
Keith

[Guest]

30% glycol 70% distilled water is what I’ve run for years, will be changing it soon while trying (in vain) to cure its leak into the V

[72BLUE]

30% glycol 70% distilled water is what I’ve run for years, will be changing it soon while trying (in vain) to cure its leak into the V

Hi Jason, Since I bought my Stag a few years back it always used to leave a little water in the V after being used. I guessed it would be the pump or the inlet manifold at fault. However after I renewed all the coolant hoses and the steel pipe that runs parallel with the RH head, the leak disappeared.

You may get lucky like I did???..............


Keith

[Richard G]

Waterless Coolant for me!

[KOY 23]

Thicker, so more load on pump. Cost, although ethyl alcohol antifreeze is still fairly cheap.

30% in water is fine. Change it every 2 years.

Anything that puts more load on the pump is not a good idea.

Link gives many more reasons why “waterless” is not a good idea.

http://www.norosion.com/evanstest.htm