Re: water/antifreeze

Posted by Tim Cole On 2013/1/2 12:38:33

As regards the GL-1, I've tried that in worn out units and it is too slippery for the synchros. So if I have a vehicle that is shifting okay I leave it alone. In most every case when I took apart a trans for the first time it had hypoid oil in it, so the damage was already done although by the 1960's only overseas car makers were not using hypoid in manual transmissions with bronze synchros.

You can get the heavy 140w mineral oil from Lubriplate.

The Mil Spec 2105 for GL-5 is supposed to required bronze tolerance, but I have tested the stuff in copper and it does react.

One other note about freeze up on the Senior 8 motors - the flexible water jacket should prevent most damage risk from freeze up so I'm sure the car is alright.

As regards tap versus distilled water. City water supplies are probably okay, but do not use well water. I have never understood why they don't just use additives to neutralize disolved chlorides in city water. It makes no sense except that there is higher profit from pushing premixed coolant.