Abn150

OK, I know there is not an oil analysis lab under the hood. But is this calculation based only on the mileage driven since the last oil change? Or is the type of driving somehow factored in, constant speed versus stop and go, etc? Or some other variables?

bajaman

Lots of factors taken into consideration, including how it's driven, etc. Towing significantly reduces the oil life/time between changes...according to the nanny. I put maybe 5000 miles a year on my truck and the nanny will beseech me to change oil twice a year, lol! It's a pretty useless gimmick, frankly. At least insofar as what even a semi-knowledgeable person would do inherently...but of course there aren't too many of those around, lol.

David Hineline

Goes with mileage, how hard the truck is driven, idle time vs highway time, and time in general. Oil has a shelf life it expires even sitting on the shelf in a store. Your oil life calculator will cound down even if the truck is parked and never started.

Bikermike

Never this asked before but if you have a Powerboost with 2000 miles on it and 500 are electric is that considered 1500 or 2000 miles on the engine.

markwang

It can cost me 5% oil life on a 500 mile road trip or on 50 mile city driving while towing.

Bucho65

Do you have a source for this? This is conflicting information from what I got from blackstone labs. They told me oil doesn’t go bad from sitting. I have read a test they did where they ran an engine with oil from the 50s or 60s from sealed cans and it performed as expected given the lack of additives and refinement it had.

With the wife’s mkz waiting to change the oil when the oil life monitor tells you to the oil is black and smells like the oil coming out of the junkers I drained back in my junkyard days. IMO that’s waiting too long. I usually change when it gets in the 30 percentile range or high 20s.

Bucho65

I would consider it 1500 miles but the start-stops might cancel that out.

gagliano7

If you have the 5.0 and use E85 the monitor goes down quicker.

imnuts

In sealed containers in a relatively stable environment, the shelf life is basically how long the container will last. One you pour it into the engine, it's no longer fully sealed and will experience temperature and humidity changes, plus you run the engine, so it'll get contaminants from combustion. The biggest issue would be potential fuel/water mixing in. With normal running, both evaporate out or are burned off, but not so when just sitting.

cdlamb

I have been sending oil samples in for analysis since I purchased my 3.5 ecoboost new.

My most recent sample was sent and came back with fuel dilution issues again.

My OLM was showing me at 60% oil life / 40% remaining.

AGAT flags the additive package(Boron) when it gets depleted past 50% I think.

I had submitted samples to Blackstone once before, & they recommended running the oil for a longer interval, while the same sample came back from AGAT with a recommendation to replace with viscosity being out of spec, & the Boron depletion.

Blackstone doesn't do a very accurate Fuel dilution assessment, & Fuel dilution may eventually be damaging to the Turbo's in these engines.
I have been trying to do oil changes around 8000 kilometers or 5000 miles, based on the oil analysis reports I have been sending