Differing Thermostat Temperature Options

[mostly amazing]

I noticed ECS and Pelican sell thermostats for the water cooling system that come in various differing temperature ratings: 68 degrees Celsius, 71 degrees Celsius, 80 degrees Celsius, 88 degrees Celsius. My questions are:

1. Why have differing thermostat temperature ratings?
2. Are there any benefits of going with a temperature rating that is not OEM?

[fo3]

racing or extreme weather applications, ie higher compression or boosted.
For road use you want 88-90C. If you run a lower temp then yes your engine will run cooler, but richer and more fuel use and no point with standard engine

[CallMePuff]

racing or extreme weather applications, ie higher compression or boosted.
For road use you want 88-90C. If you run a lower temp then yes your engine will run cooler, but richer and more fuel use and no point with standard engine

To confirm, should a boosted engine, even if only for road use, have a lower temp tstat?

Sent from my Nexus 6P using Tapatalk

[fo3]

Only if you're the type to lay the boot in before it would be fully warmed up and the regular t/stat opens.

[CallMePuff]

Only if you're the type to lay the boot in before it would be fully warmed up and the regular t/stat opens.

Good info! Does it have any cons?

Sent from my Nexus 6P using Tapatalk

[GazM3]

Any cooler than 80 the heater won’t work in winter very well when on a trip.

[moroza]

I noticed a minor fuel consumption decrease after replacing an 85C thermostat with a 95C (what the engine was supposed to have).

[bigsixe34]

I just changed the slow-failing TStat in my m54 (X5 3.0L) and instantly recovered 3 MPGs, up to 22 from 19 combined. No change in driving locale. Went with the stock replacement because like others have said, there is more harm than benefit in installing a cold temp thermostat outside of the reasons mentioned (drastic engine mods, racing only conditions, etc). Your motor is optimized for fuel economy at the original spec temperature. The OBC in the X is now showing steady 92-100 C operation when warm, up from a previously much wider range of 78-95ish.

[Hofmeister]

I run an 80. South florida summer traffic means I take every precaution I can.