[grivera]

great - did you test the thermostat in a pot of water before install? I've tested numerous 160 and 180 stats. Some open on time but others don't fully open till about 15 degrees above rating.

[yellow1098]

I didn’t test that…..I will next time for sure….I have a 160 in there being in florida

[grivera]

I used Red Line Water Wetter along with a 50/50 mix and noticed no improvement in cooling. However, it resulted in oily deposits in my coolant - easy to see under the radiator cap. I searched the web and found others who experienced the same when using with a 50/50 mix. I’ve since flushed my cooling system and put in 50/50 only. This is apparently normal but I didnt want any weird substance helping to clog my radiator or heater core.

Others with similar experience: https://www.audiworld.com/forums/tt-...-tank-1783232/

[tom s]

I only use distilled water and water wetter anymore.Tom

[grivera]

Originally Posted by tom s

I only use distilled water and water wetter anymore.Tom

If I wasn’t in Maryland I would too - I drive the cars if roads have no salt.

[yellow1098]

Ok one more silly question……..is 50/50 mix better for colder weather? Is that what it’s for? Or is it the opposite?

[Sirrotica]

This link will tell you all about antifreeze;

https://www.carid.com/articles/antif...Boiling_Points

[lust4speed]

Originally Posted by tom s

I only use distilled water and water wetter anymore. Tom

Almost with you but because of my elevation and the cars being stored in an unheated steel building I go with a 25% antifreeze mix, distilled water, and Water Wetter. That takes things down to about 12° and our lows never go under 22° The drag car was always distilled water and Water Wetter and I never saw any rust or corrosion so the additives must be pretty decent in the product.

I forgot about a tin gallon can of antifreeze on the garage shelf and within a few years the bottom rusted through and the contents flowed out. So much for the anti-rust properties of that product.

[track73]

Water pump lube is actually soluble oil which is oil mixed with detergent.