Have they checked the oil pressure sending unit? How about the wire leading from the unit to the gauge?
Make sure the tires have the correct pressure.
no. speed of light is always constant . as long as the light stays in the same medium. the speed is generally slightly different in different media.
I had the same problem on my 2005 Outlander. Oil pressure light turned on erratically when the motor was hot and I was on idle. Mitsubishi repaired it on guarantee, the oil pressure switch was defective, they changed it. JJ
Check for a Oil Level Sensor If It Has One It Could Be Reading Faulsly.....
If the light was on before you changed the oil and you now have the correct amount of oil, and correct viscosity, then it can be that your oil pump is defective. not putting out enough pressure. if you have an oil gauge, if that shows oil pressure is OK, then your light can be shorted out.
The indicator was not or cant be reset.
That light indicates poor oil pressure. Not, low oil necessarily. You may have a leaky gasket.
Install a manual gauge to actually read oil pressure
You may be losing oil pressure because of a blown head-gasket. If you have a computer which alerts you to oil pressure or service soon after you just had it serviced you'll need to reprogram it
The warning light can come on when it is time to change the oil. Your oil pressure and oil level can be at recommended levels when the oil needs to be changed.
Oil pump needs replaced,engine light comes on because of low oil preasure.I just changed mine out and it took care of the problem.
The oil light will always come on for just a second after a car is started. If the oil light stays on, the oil could be low or need to be changed.