A board search revealed nothing specifically on this, so here goes:
Wife's car, 2006 Ford 500, 3L V6. Runs 5W30 Pennzoil Ultra Platinum (at least until my supply runs out). It has an oil life sensor that puts a message on the dash to the effect of "Hey, you, change your oil". Usually it's around the 3000 mile mark. When we've done longer road trips, the sensor has gone as long as 5000 miles. This time it came on with 0% oil life at 2,850 miles.
The car gets mostly urban stop/go driving (north suburban Atlanta), so I know that type of driving is hard on oil, but I find it difficult to accept that Pennzoil synthetic (or any good synthetic oil for that matter) would actually go south at 3,000 miles.
Assuming (cautiously) that the car's computer can't tell synthetic from non-synthetic oil, what sort of formula are these 'computer monitors' using to calculate 'oil life' ??
Thanks in advance.
Wife's car, 2006 Ford 500, 3L V6. Runs 5W30 Pennzoil Ultra Platinum (at least until my supply runs out). It has an oil life sensor that puts a message on the dash to the effect of "Hey, you, change your oil". Usually it's around the 3000 mile mark. When we've done longer road trips, the sensor has gone as long as 5000 miles. This time it came on with 0% oil life at 2,850 miles.
The car gets mostly urban stop/go driving (north suburban Atlanta), so I know that type of driving is hard on oil, but I find it difficult to accept that Pennzoil synthetic (or any good synthetic oil for that matter) would actually go south at 3,000 miles.
Assuming (cautiously) that the car's computer can't tell synthetic from non-synthetic oil, what sort of formula are these 'computer monitors' using to calculate 'oil life' ??
Thanks in advance.