Oil Changes: Is Every 3,000 overkill?

[UberSilver]

Or, Mobil1 extended drain once per year @ $27. for 5 quarts.

And Denso oil filter twice per year @ $3.x2.

Originally Posted by fnkngrv

3k/3 month interval:

Conventional Oil 10w-30 (40qts needed for 25k miles)
@ $3.00/qt * 40 = $120.00
8 Standard Filters
@ 6.00/filter * 8 = 48.00

Total: $168.00

AMSOIL 25k/1 year interval:

AMSOIL 10w-30 (5 qts needed for 25k miles)
@ 7.35/qt * 5 = $47.75
1 EaO Filter
@ 18.30

Total: $55.05

Savings: $112.95 annually


Even if you only drive 12k miles per year you are saving just in oil/filter costs not to mention the following benefits:

- Easier cold-temp starting
- Improved fuel economy over time
- Cleaner running engine
- Cooler running temps
- Should experience more power/throttle response
- Less engine wear
- Longer intervals between changes which means less inconvenience of the car being at the shop


I wouldn't use a standard oil for more than 3k miles so if you are fixed on using conventional then yeah stick with 3k changes, but it is a monumental waste all around.