Have a car that was built in Feb 2013 and sat inside at the dealership until I brought home in November. Was about 475 miles . Car has been driven about 90 miles since. I usually start up about once a mo and let run for approximately 30 mins. Well now I’m realizing the is oil is at least a yr and a half old. Oil life says 68%. Will only be started for winter exercise now.
Does this need to be changed or wait til % gets lower?
Thanks
D
When you say built, do you mean fresh motor?
I’d change it. Moisture collects from temperature changes and from just idling and not really getting hot. I’d change it every year as it’s something you obviously care about. rotella t6 is cheap. Can you drive it for 30 mins instead of letting it idle?
2013 427 vette. That was the build date of car.
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When I start it I let it run a good 30 mins to get all temps up.
Can’t really drive, never registered it.
at minimum once a year. if you want to do it every six months.
I’ve read that starting it and letting it idle is worse than properly storing it. If it’s in a properly humidity and temperature controlled environment I’d just let it be, cocoon style. Research long term storage oils/additives. the oil in the diff is just sitting there along with the brake fluid absorbing moisture magically and tires getting flat spots, etc etc. Coolant hoses could be drying out, etc etc.
Cars weren’t meant to sit.
I wouldn’t run it all winter. If it is climate controlled condensation should not be an issue anyway. Running it can can cause temperature differentials and condensation on parts that do not get hot.
I have always herd this, but to question the theory here for a second. For a surface to condense water it needs to be colder that the surrounding air or there needs to be a air pressure change in order to change the dew point of the air holding moisture for example combustion. Since everything about a running engine and transmission would never make it colder that the surrounding air how would moisture collect by letting a car run?
One of the byproducts of combustion is… water vapor.
Yes i mentioned that in my post
I don’t really understand your last part of your question, but a running engine is hot enough that moisture would probably just evaporate and not just condensate on it.
I think the issue people have is firing a car up in the winter for 5-10min and not actually running it hot enough for that to happen.
If you need someone to drive it for you just let me know.
Finally someone said something intelligent. 
Heaterz
So would 30 mins be good enough ?
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Actually drove it to a private party/ car show a few weeks back and got on it for the first time and when it hit 2nd actually got a little sideways but stayed in it. Would that be considered a heater?
Rolling heater, definitely.
Idk about just idling. It depends on what timing is like at idle, I imagine it doesn’t really get hot hot, things aren’t circulating fast and getting worked. It’s better off to properly store it and just leave it be.
I would change the oil once a year and then run the car for a half hour or so, preferably driving it. I wouldn’t run it at all until a year later and repeat.
+1
You should just sell the car, because you’re basically just wasting space and money…