On Sat, 28 Apr 2018 16:45:13 -0400, wrote:
Snipppppppp

I've yet to see a car that does anything with over temperature except expecting you to notice the guage is higher.

Well, a Cadillac Northstar shuts down cylsin a pattern allowing the
engine to SAFELY continue running at reduced power even if it totally
runs out of coolant - and that goed back to 1991.

ALL OBD2 compliant engines (that is 1996 on) flash the CEL if the
engine overheats, and MANY vehicles going back several decades had
"overtemperature" warning lights , sometimes in combination with a
tempguage and sometimes alone.

Most cars today have no temp gauge. If the temp gets too high, the
CEL comes on together with a warning message about temp.

You must be one of those morons that buys cars new enough to have excessive depreciation. Thankyou for making 2nd hand cars cheaper....

The question remains though, why were cars not always made like this? They've always had oil warning lights, but over-temperature is ****ing important and deserves a warning light.

Not ALL cars had oilpressure lights - some had only gauges. And the
oil pressure light generally only comes on if the pressure drops below
3 or 4 psi - where damage can already be done.

We called them "inconvenience lights"

But then you're the guy who says you never change
the oil, only add oil when it's half empty, etc. Serious people who
contemplate such things also weigh the issue of disabling a car because
it's gone over temperature, versus letting you continue to drive it,
at your own risk, if you happen to be in a tunnel, fleeing a fire,
or driving through a high crime area.

If the oil isn't running smoothly, I expect a warning light. Flow sensor? Pretty easy.

The smart Scotsman should design a car - and see if he can make it
any better than a Peel P50

Nuff said there about your knowledge and practices.

What do you think makes the oil warning light come on?