![]() ![]() In addition this engine used slower than conventional flow rates which is opposite to what NPG cooling requires. We suspect that the engines were tested improperly on a dynamometer and not in a properly balanced system. Evans has data which contradicts this assumption. Actually this can be corrected with increased flow.Ģ) Engine efficiency and emissions are not changed with increased coolant temperature. They are:ġ) Larger radiators and oil coolers are needed to compensate for reduced convective heat transfer predicted by its physical properties. Within the limits of the test the following benefits to NPG were verified:ġ) Extremely good system corrosion protection.Ģ) Extremely good cylinder liner cavitation protection.ģ) Provides greater margin of boil-over and vapor blanketing protection.Ĥ) Eliminates cavitation damage in the pump.ĥ) Cooling system maintenance and chemical addition should be greatly simplified.ġ) Nitrile rubber was observed to have increased swell, but was still functional.Ģ) Some of the gasket and seal materials were hardened, indicating the need for more robust materials when using elevated coolant temperatures.Ĭomments: There are some conclusions which are contrary to testing done at numerous locations under the guidance of Evans. This points out the difficulties of an OEM, not trained in the total NPG system design, coming to improper conclusions. Thus performance improvements such as fuel efficiency, power and emissions were not realized. Evans was not involved in any way with the testing. The protocol of the testing was done without any expertise in the use of NPG coolants. File No: D-41įour different engine tests were run utilizing NPG to examine durability of the coolant and engine performance. I'm not saying it's without merit, but manufacturers don't use it for a reason.Ĭummins Diesel Engines and ARCO Chemical joint test program, SAE Paper 930584. Coolant should never enter the combustion chamber. They also say "By bathing the entire combustion chamber with coolant 100% of the time, metal temperatures are controlled to such an extent that critical levels of detonation and pre-ignition are never reached." If you're bathing your combustion chamber with coolant, then something is seriously wrong. If the cooling system fails because you spring a leak, and your cooland dumps out, then how is it supposed to carry the heat to the radiator? Again, the result is overheating. If you have no flow because the pump failed, then the coolant won't carry the heat to the radiator, which means the heat won't be released to the air. Works without pressure? If you heat a fluid, pressure will build.Įngine won't overheat if the cooling system fails? False. ![]() Improves the ability of coolant to wet heat transfer surfaces by 50%.I can't trust any product with uses blatant lies to hype itself. This liquid product can be used to provide rust and corrosion protection in plain water for racing engines, which provides much better heat transfer properties than glycol-based antifreeze. This is a liquid coolant treatment product which is designed to be added to solutions of antifreeze and water to help improve the heat transfer properties of glycol-based antifreeze. Red Line Water Wetter Super Coolant additive is a unique wetting agent which reduces coolant temperatures by as much as 20° F. ![]()
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