1994 Pontiac Bonneville 3.8L
Out: 4.5 qts MC5K Purolator Classic
In: 4.5 qts Valvoline MaxLife (red bottle), Baldwin Filter
Miles on vehicle: 150,449
Miles on oil: 2,751
Time on oil: 16 months
Make up oil added: 1 qt
This car ran with a stuck open thermostat for about a year, including all last winter. Combine that with 90% short trip usage (less than 6 miles) and you have some pretty nasty less than 3000 mile dino that reeked of fuel. I really should have changed the oil when I fixed the thermostat a few months back - I thought the summer heat would burn off some of the fuel, but it didn't appear that it did. I'll try and go longer on this next run, especially with the semi-synthetic MaxLife.