Has anyone had any experience with a Stant Superstat? If so, I'd like to hear what you think of them. Thanks.

if you buy something from INTENSE during this weekend, I think you get a free INTENSE T-stat

I've got an INTENSE 180 stat. I was just reading about the Superstats and was wondering if they actually perform as it says they do. From their literature:

Unlike conventional thermostats that continually open and close to achieve the proper operating temperature and flood the engine with coolant, the Stant SuperStat® thermostat has a patented v-notch, non-linear design that reduces cycling by precisely metering the amount of coolant needed to maintain proper operating temperature.

The v-notch provides a small inital flow. As the engine heats up, the v-notch gradually opens wider, metering coolant into the system until the desired engine temperature is reached.

The benefits of proper engine temperature are:

-efficient engine operation,
-prolonged engine life,
-reduced oil consumption,
-improved fuel economy
-and reduced emissions.

Stant'* SuperStat® uses a high flow venturi for maximum cooling capacity during high temperature, high load operation and employs a patented Weir Valve® for precise flow metering during cold weather, light load operation to ensure stable temperature control under all conditions. The high strength stainless steel flange is burnished to a bright finish for additional stress relief and added corrosion resistance. The Stant SuperStat® thermostat flange thickness of 0.040" is 33% thicker than our standard reverse poppet thermostat and up to 43% thicker than competition for added strength and longer life.

From a practical standpoint, I don't see a benefit.

Any random time you start your car to drive it, the thermostat will open at a predetermined temperature and STAY OPEN for the duration. This is probably 98% of the run cycles for your car.

I go for flow. Less restriction. Think about it.

My recent experience with "better" thermostats left me back with the $4 models. That little V-notch in the Superstat would provide an air bleed. And I can imagine that a small flow past the thermostat would help to reduce temperature stratification or dead flow spots that occur near a thermostat with no air bleed. However, I doubt that the V-notch would be located as close to the outside edge and therefore be as effective as the air bleed we create when we drill a small hole in the flange of a normal thermostat and locate it at the high point. I do not know for sure if the Stant Superstat is a better thing, but I do know I won't buy another Motorad Safety Stat. Thread discussing Motorad Safety Stat One of those stuck fully open on me on a road trip this winter, and proved that in cold weather, a functioning thermostat should not stay fully open. If it does so when you are driving in the cold on an interstate with a good cooling system, the cold air rushing past the radiator will prevent the coolant from maintaining enough heat to operate the engine properly or provide cabin heat. So, while the thermostat should maximize flow to realize the full capacity of the cooling system, (especially important in warm weather), the cold drive on the interstate represents the other important function of the thermostat - to maintain operating temperature of the engine by restricting coolant flow.

Bill and Bill: Both good points. The issue was just a point of curiosity for me. Stant has always been a reputable company as far as I know so I didn't dismiss the claims off-hand. It seems to me if the superstat was better than a normal one, someone on this forum would be using one or at least would have tried one. That'* why I posted. Thanks.

I now use INTENSE instead of Stant. Here'* why:

To answer your question, I've been running one since November without issue.

Thanks for the info. I do have a 180 stat from Intense that I drilled. I figured I would put it in when I do the LIM gaskets in the spring. If I use the 180, do I have to changed the fan kick-in speed to 180? If so, is that done via the PCM?