Any reason to run an engine after a oil change?

Starting and running for the 30 seconds or so to circulate the oil and check for leaks will cause no issues. Having it sit for 2 years without being driven will likely cause more issues than a brief start-up. I can fix the latter for you. Just send me the keys and tell me where it's parked.
 
no if the oil pump gets enough air in it, it might not prime for a long time cranking. it depends how much ckearance there is. Similar to what happens on a new build.
Is that not the same whether it starts today, next week, or two years from now?
 
I'm in the "opportunity to check for leaks and displace the acidic oil" camp.

Two years, you say? How 'bout lifting the car off its springs?
Raise to a point where the tires are still in contact with the ground but not bearing any substantial load.

I kinda like wetting the injectors before storage. There's got to be a favored injector embalming fluid.
 
Is that not the same whether it starts today, next week, or two years from now?

Not if you start with a tube full of air just below the oil pump. the air wants to go up, and the oil in the pump wants to go down. If it's a full tube the oil has to drain throughout the entire engine first.

one could make a difference in a few days, the other can take years.

I had an oil pump lose prime on a customer car during a simple oil change once, it wasn't pretty. it sounded like I forgot to put oil in it, but the sump was full. Luckily it started pumping just around the time It took me to get back in and stop the engine. The engine lived but that was the closest call I ever had.
 
You said you don't want to reduce the fuel level. Did you tow it from where it was fueled?
 
It takes more for oil to become acidic than I think you guys realize. Who says the existing oil film is acidic?
 
If mine I would start it, wait for the oil light to go out then take a peak underneath to check for leaks. Stop the engine and come back an hour later and check the oil level.

But that's just me. What I do on any OCI.
 
Maybe just a creature of habit, but I run the vehicle around the block, look for any issues/check lights on the dash, and on return check for leaks. Then button it all up (skid plate etc.) Reassurance all is good and ready for the next drive. But honestly never had an issue after an oil change/because of an oil change.
 
Like bullwinkle suggested, fogging is good for a downtime that long. While we still occasionally use our v6 boat during the winter, I still fog it every time due to the insanely wet weather here. I don’t worry about it in the summer.
 
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Changed the oil on this 2012 S500 earlier this week. The car had been sitting for 60 days. The car will likely sit for the next 24 months.
I would have drove it to get it full hot, then do the oil & filter change - drain oil fully by drain plug. Then drive it again after the oil change to fully hot. Stop by the gas station close to home on the way back, fill up the tank with fuel stabilizer added. Then drive straight home and park it. Disconnect or remove the battery and/or keep it charged since 24 months is a pretty long time to sit.
 
Is that not the same whether it starts today, next week, or two years from now?
I have seen old car revivals where they sat for years and the oil pump wouldn't prime. For 2 years it is probably unlikely but definitely not out of the question. Also what is the point in changing the oil in the oil pan if you're not going to run it through the engine?
 
I have seen old car revivals where they sat for years and the oil pump wouldn't prime. For 2 years it is probably unlikely but definitely not out of the question. Also what is the point in changing the oil in the oil pan if you're not going to run it through the engine?
Memory is the reason I changed the oil. My memory is not so well. I change the oil in all my vehicles in the last few weeks. One less thing I have to try and remember. I know when I return to the vehicles they all have fresh oil, and a full tank of gas and Stabil.
 
Its an easy way to quality check yourself, its simple, effective and gives you assurance.
Wish I would have. I have departed from the vehicle. Hopefully home at Christmas and will start her up and get that oil moving. If @Pablo gets sick of the rain, wind, clouds, cold in Washington, he can slip away to New Mexico for some dry sunshine and help a buddy by starting the S550.
 
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Memory is the reason I changed the oil. My memory is not so well. I change the oil in all my vehicles in the last few weeks. One less thing I have to try and remember. I know when I return to the vehicles they all have fresh oil, and a full tank of gas and Stabil.
The phone has memory 🤫

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