engines collect moisture and it mixes with sulfur and other compounds to turn into sulfuric acid... So in the OLD days, you changed often and before going into storage.
roll forward to the 70s... modern hd oils have extreme base additives to fight and neutralize acids so they are NOT a problem. Modern oils come with a base number of 11.x which means they are not acidic till the reading gets below 7 which is neutral or same as water.
Driving the car will also keep the oil temperatures above 212,, usually around 220 and above, so any moisture is boiled off into vapor and sucked out the the pvc system. Also very little sulfur in the oils any more and lead by products are gone.
So the vehicle will be in relatively good shape going into storage. BUT will have heating and cooling cycles with condensation during storage, meaning that it will have the most danger at end of storage.
SO... use a good hd oil, and change the oil coming out of storage to get rid of the excess moisture from not being run.
Any car used for short trips where the engine does not get to full temp, will ALWAYS be an exception.. You can either run it out at hyway speeds once a week or change oil often...
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Today's Featured Article - Timing Your Magneto Ignition Tractor - by Chris Pratt. If you have done major engine work or restored your tractor, chances are you removed the magneto and spark plug wires and eventually reached the point where you had to put it all back together and make it run. On our first cosmetic restoration, not having a manual, we carefully marked the wires, taped the magneto in the position it came off, and were careful not to turn the engine over while we had these components off. We thought we could get by with this since the engine ran perfectly and would not need any internal work. After the cleanup and painting was done, we began reassembly and finally came to t
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