GM V-6 OLM @ 3% in 3.5k mi

[Gyro Gearloose]

Could you have a temperature sensor reporting a perpetually cold engine?

 

[WobblyElvis]

There is no mystery here. Grasscutter said he/she had done a lot of city driving and idling. Starting in January/cooler temps. The OLM is doing it's job. Change the oil.

 

[FZ1]

Valvoline Maxlife regular blend 10W-30.

Good Vis.

 

[SevenBizzos]

Many of you guys go 7000 to 10,000 miles on full synthetic. Do you make it that far without the OLM going down to zero?

I've had it go to 0% before. It usually happens around 10k. I've posted UOA's from that OCI and everything looks pretty good.