I change oil and filter end of July and in November as part of winter storage prep. With OEM filter and 3.4l of Rotella T dino purchased by the pail at CT it's about $27 x 2 or $54 bucks a year. This is a minuscule amount of the total annual cost of riding a bike and it is really not worth the time to think about whether I could save $27 by doing just one oil change a season vs. two.
Over 16 seasons with the ST Quicken tells me I've spend $36,000 on all bike related expenses (Insurance, parts, service, tires, gear, fuel) and this amount does not include the cost of the bike itself, nor does it include any trip related expenses such as hotels, meals etc....... So my average annual cost is an understated $2,250 ($36,000 / 16) and the a potential oil savings is $27 or 1.2%.
Over 16 seasons with the ST Quicken tells me I've spend $36,000 on all bike related expenses (Insurance, parts, service, tires, gear, fuel) and this amount does not include the cost of the bike itself, nor does it include any trip related expenses such as hotels, meals etc....... So my average annual cost is an understated $2,250 ($36,000 / 16) and the a potential oil savings is $27 or 1.2%.