The reason I say that is coming from the marine side where its not uncommen to have to deal with engines that sit a lot. I have seen more then one that just runs like crap until a few hours are put on it under load.

Engines like to run.

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2006 CL500
2009 C300 4matic
1969 280SE
2023 Ram 1500
2007 Tiara 3200