Maintenance Question - Oil Changes
2009 Chevrolet Impala LT 4-Door (Wife’s Commuter Vehicle)
3.5L V-6 w/Automatic Transmission
Motor Oil Used: (4 quarts) Mobil-1 Extended Performance 5w30
I change my own oil and while the car is under warranty (100,000 miles / 5 years)
I will continue to use AC PF-61e oil filters as specified.
I just changed the oil and filter again (wife drives over 5,000 miles < 2 Months) and although it’s easy to do on this engine, the thing that concerns me is that the engine oil capacity (w/filter change) is only 4 quarts. 4 quarts fills it to top of range marked on dipstick, but it is disconcerting when I drain the oil and get slightly less than a gallon out of it. It just doesn’t look like much oil. I’m used to seeing 4.5 to 5.5 quarts as in our other cars.
I check the oil every week-end. The car uses virtually no oil between changes at 5,000 mile intervals and I’ve not had to add any.
The last 3 changes Oil Life Remaining (on OLM) at 5,000 mile changes:
10,000 miles . . . 38%
15,000 miles . . . 40%
20,000 miles . . . 34%
The 4 quarts bothers me (except the savings on Mobil-1). It’s just such a small amount. Do you think I should try putting in a few more ounces ? How many more ? Should I throw in 8 ounces and see where it lands on the dipstick or just leave it alone ?