Originally Posted By: Uregina09
The OLM in my F150 definitely isn't a mileage counter. I'm on track for an (approximate) 8,000 km oci this winter. It counts down very quickly when it's -35 Celsius outside. In summer the OLM counts down much less quickly.
Originally Posted By: 09_GXP
What vehicle? Do you have an OLM?
In the F150, its supposed to have an intelligent Oil Life Monitor, but I've only found it to be a mileage counter. The manual says to expect the maintenance light to come on between 3000-5000 for severe, 5000-7500 for moderate driving, and 7500-10000 for a normal duty cycle. No mention of hours.
Interesting, I've towed 70+mph at >85% GCW and still been on track for a 10k OCI. I dumped the oil early and the UOA didn't look to strong. I'm sticking to 5k max. I really want to trust the engineers that developed the engine, as I'm one myself, but can't bring myself to do it after my UOAs.