Rotary Car Club - View Single Post - Coolant additives tech article for discussion.

cewrx7r1 · 11-04-2010, 11:37 AM

I remember when DEXCOOL first came out and was recommended for European aluminum engines. Soon afterwords many American manufactures started using it. Some paranoid people said it ruined their seals and engines soon after switching to it.

As we know, all sort of things can happen and then one draws the wrong conclusion without scientific testing.

Since "I" rebuilt my engine in 1999 to racing specs and dynamically balanced, it has used:
(1) 75% distilled water, 25% Dexcool, and 1 bottle of Water Wetter.
(2) Royal Purple 5-30 oil.

My engine has over 40,000 miles at above 350 whp.
Last year when I checked the compression, all faces were above 115psi. The engine still runs great and never had any coolant leaks or oil problems.

Maybe building an engine properly is more important?

11-04-2010, 11:37 AM	#17
cewrx7r1 The Judge Join Date: Feb 2008 Posts: 196 Rep Power: 18	I remember when DEXCOOL first came out and was recommended for European aluminum engines. Soon afterwords many American manufactures started using it. Some paranoid people said it ruined their seals and engines soon after switching to it. As we know, all sort of things can happen and then one draws the wrong conclusion without scientific testing. Since "I" rebuilt my engine in 1999 to racing specs and dynamically balanced, it has used: (1) 75% distilled water, 25% Dexcool, and 1 bottle of Water Wetter. (2) Royal Purple 5-30 oil. My engine has over 40,000 miles at above 350 whp. Last year when I checked the compression, all faces were above 115psi. The engine still runs great and never had any coolant leaks or oil problems. Maybe building an engine properly is more important? Last edited by cewrx7r1; 04-08-2013 at 08:52 PM.