Coolant change
Safety Car
Joined: May 2001
Posts: 4,759
Likes: 1,647
From: Fairfax Virginia
I love the EVANS NPG and have been using it for over 25 years in my C3 with a High Compression Big Block engine. For high compression engine is works great and with zero pressure in the cooling system I have not had to replace hoses, radiators or heater cores as often. I strongly recommend the Evans NPG as it has worked great for me. Fortunately when I bought mine 25 years ago it was cheaper. I still use it in a water cooled 2 stroke Motorcycle (Yamaha RZ350) and on my C3.
The only time I have ever been "unhappy" while using the Evans NPG was when I was cruising one day and I heard a "ping" from under the hood. A nut had come loose, bounced off a fan blade and punched a small hole in the radiator. I stuck a pencil in the hole to keep the leakage to a minimum. The idea of having that expensive fluid dripping onto the roads was bothersome. Especially when you can't top it off with anything but Evans NPG.
Hey there DC3,
On my 1988 C4 I have been using the standard green anti-freeze. Since I live in Northern Virginia and we don't see really cold temperatures around here I run 70% distilled water and 30% anti-freeze. This gives me more water to use to get rid of the heat and the minimal freeze protection I would need here. You being in Texas could save some of the money on the anti-freeze by using the 70/30 or even 80/20. Just be sure to add a bottle of the Water Wetter to assist in getting all the heat out. The water wetter prevents the steam bubbles that form on the inside of the cooling system on the metal surfaces and inhibits the transfer of heat. It really works and works well. For a short time before I went to the Evans NPG I had 100% distilled water with 2 bottles of water wetter and it worked pretty well as long as it doesn't get cold enough to freeze the block. I did not leave it in the engine over winter months.
The only time I have ever been "unhappy" while using the Evans NPG was when I was cruising one day and I heard a "ping" from under the hood. A nut had come loose, bounced off a fan blade and punched a small hole in the radiator. I stuck a pencil in the hole to keep the leakage to a minimum. The idea of having that expensive fluid dripping onto the roads was bothersome. Especially when you can't top it off with anything but Evans NPG.
Hey there DC3,
On my 1988 C4 I have been using the standard green anti-freeze. Since I live in Northern Virginia and we don't see really cold temperatures around here I run 70% distilled water and 30% anti-freeze. This gives me more water to use to get rid of the heat and the minimal freeze protection I would need here. You being in Texas could save some of the money on the anti-freeze by using the 70/30 or even 80/20. Just be sure to add a bottle of the Water Wetter to assist in getting all the heat out. The water wetter prevents the steam bubbles that form on the inside of the cooling system on the metal surfaces and inhibits the transfer of heat. It really works and works well. For a short time before I went to the Evans NPG I had 100% distilled water with 2 bottles of water wetter and it worked pretty well as long as it doesn't get cold enough to freeze the block. I did not leave it in the engine over winter months.
Melting Slicks
Joined: Apr 2001
Posts: 2,030
Likes: 363
From: Lubbock Texas
While it's not unusual to see mild winter weather in my part of Texas, it's also not unusual to have weeks where the temperature never gets above freezing. We can have very hard freezes here. I've had water lines freeze despite being buried about 12 inches. Texas has 9 different climate zones and 6 different plant hardiness zones. If I lived on the east or south sides of the state, I could easily get by with 70/30 or so.
DC
