New Engine Antifreeze Recommendation Needed
Thread Starter
Teching In
Joined: Jan 2005
Posts: 33
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New Engine Antifreeze Recommendation Needed I'm putting together a 5.3 Vortec with a reman longblock, new water pump, new radiator and hoses. It's a clean slate.
What is the best antifreeze for a "new" engine. I had good luck with the OEM Dexcool, however, I see that there is a component called 2-EHA that can cause problems.
Anyone use PEAK Titanium in an LS?
What is the best antifreeze for a "new" engine. I had good luck with the OEM Dexcool, however, I see that there is a component called 2-EHA that can cause problems.
Anyone use PEAK Titanium in an LS?
TECH Fanatic
Joined: May 2016
Posts: 1,292
Likes: 436
From: St. Louis
Yes, what is this magical juice I can put in my radiator to help the engine run cooler? This is LS1 tech. Let's have some science coolant which one's your favorite. Why? What about additives? Good bad who knows?
Can you tell I'm looking to replace my coolant with something cooler?
Can you tell I'm looking to replace my coolant with something cooler?
TECH Fanatic
Joined: May 2016
Posts: 1,292
Likes: 436
From: St. Louis
I switched to Dex cool when GM did LOL. Anyhow, It's my understanding that pure water without any coolant would actually cool the engine marginaly better is this true? However, without the chemical additives there'd be no protection For the engine so That being said, has anyone seen a cooler running engine in the summertime with a leaner mix of coolant?
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Verdad Gallardo I switched to Dex cool when GM did LOL. Anyhow, It's my understanding that pure water without any coolant would actually cool the engine marginaly better is this true? However, without the chemical additives there'd be no protection For the engine so That being said, has anyone seen a cooler running engine in the summertime with a leaner mix of coolant?
On the topic of removing heat from the chamber, yet somewhat off camber here…keeping heat IN the chamber EFFICIENTLY and PURPOSELY is the goal of modern endurance builders and coatings are becoming more and more exotic in this area. Coated valves, chambers, domes, rings, are helping make advances in power by effectively controlling thermal energy.
TECH Fanatic
Joined: May 2016
Posts: 1,292
Likes: 436
From: St. Louis
It’s true. it’s no secret that I was privileged to be a part of an R&D shop in the early 90’s. Cup teams farmed out their work in those days. Several top teams payed us crazy money to find them power. We sold an engine to Leo Jackson in Aug of 91’. He put it in his car as an owner, and Harry Gant won every race in September of that year…4 in a row. I can’t speak on a lot of stuff due to de-briefing and legal confidentiality stuff. I will say that we found distilled H2O to out cool any Glycol based concoctions on the market at that time. The basic formulation hasn’t changed much at all in 30+ years. Additives don’t add much to the equation to help. Raising the boiling point is a different topic altogether, which Glycol can and will do…removing heat from the chamber is the current discussion.
On the topic of removing heat from the chamber, yet somewhat off camber here…keeping heat IN the chamber EFFICIENTLY and PURPOSELY is the goal of modern endurance builders and coatings are becoming more and more exotic in this area. Coated valves, chambers, domes, rings, are helping make advances in power by effectively controlling thermal energy.
On the topic of removing heat from the chamber, yet somewhat off camber here…keeping heat IN the chamber EFFICIENTLY and PURPOSELY is the goal of modern endurance builders and coatings are becoming more and more exotic in this area. Coated valves, chambers, domes, rings, are helping make advances in power by effectively controlling thermal energy.
Edit*
So I was thinking about this and I think I answered my own question because I realized when I make runs that aren't as aggressive and I'm spending more time at part throttle, I'm using the extra advance and the engine doesn't build added heat, It's only on The harder it runs where I'm spending the most time at wot that the heat gets concerning. So it's the timing under load then that needs addressed?
Last edited by stockA4; Jul 15, 2025 at 09:36 AM.