In-trepid wrote: ↑December 31st, 2022, 12:05 am
I have 124,000 (black) and 134,000 (gray) on my two Specials. Cindy has 111,000 on her Special. My black Special had less than 600 miles this year. The gray Special just over 5,000 and Cindy's Special just under 5,000. It makes it rather easy as it is one oil change a year with Mobil 1 full synthetic for the gray and Cindy's car. Didn't change oil in the black Special this fall. I haven't figured out what I'm going to use for an interval on that one, but it will be more time dependent than mileage.
I had that issue with our previous black Special. In 5 years, it was driven a grand total of... 1 mile. Started every few months and moved out of the garage as needed, but actually driven 1 mile. I let it go a couple of years and cringed watching new-looking Valvoline SynPower run out of it when I did change it.
On my blue car I let it go two years since we didn't go to Carlisle in 2020. The only trip that year was Ocean City, then 2021 was only Carlisle and Myrtle Beach/Summerville/Charleston by way of Charleston WV and Lexington KY, so I waited until May 2022 when I was doing a bigger overhaul (timing belt).
The Jeep gets an oil change 1-2 times per year depending if it gets used for any road trips. The blue car gets it once per year, getting changed early at less than 5000 miles. The Durango is also lucky to get 5000 miles, so I change it once per year when the time limit on the oil life monitor goes off, which it does once every 365 days or 7500-8000 miles depending on how hard it was used. If we used them more often, they would get the full 7500+ miles from each Valvoline SynPower oil change.
With today's synthetic formulations, I think even once per year at lower mileage OCIs is unnecessary as long as it does get occasionally driven and the oil gets a chance to circulate.
2002 Chrysler 300M Special - Deep Sapphire Blue/Storm Gray Metallic - 142,000 miles