Okay guys, I dont want you to laugh but I tried something that I had never done before. Before when I would cruise I would reach temperatures of 195 to 200 using a 180 thermostat. At high speeds the same thing would happen. This weekend I sprayed water with a water hose through the radiator. A bunch of dirt and insects started coming out of it. I did this until the water came out clear. Yesterday I went cruising again and the temperature stayed at 180. Havent tried it at high speeds yet, but Ill post result later.

 

Good idea! I'll try it too. Good work.

 

look at shaks442 clone pics of his engine/car under the Cutlass section. On the heater supply hose coming off the water pump you will see a fixture that allows you to flush the complete engine. If you haven't put a coolant additive in your water I suggest you put one of those in and flush the engine. You can buy them almost anywhere. Good preventive maintenance item.

 

I actually already added a coolant additive. Didnt drain the whole engine though just the radiator. Orange water came out. The additive I added supposedly restored antirust agents in the cooling system. Which additive do you recommend?

 

I can't as I just buy whatever catches my attention. Some guys buy "water wetter" and swear by it, others simply use a good "anti-freeze" (which I am sure you know is really a mis-nomer).

 

Thanks for the suggestion, I will try it ASAP