Quote:
Originally Posted by hurryinhoosier62
Not really. I have seen both cranks, cams and bearing pitted by acidic oil in engines that were not warmed up long enough to burn the acidic compounds or the moisture out of the oil. And yes, oil for aircraft piston engines, diesel engines and classic automotive engine allegedly have these “acid neutralizing compounds” in them, but in my 6,000 engines of experience I have seen few engines that were stored long term that DIDN’T have varying degrees of acid damage.
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Quote:
Originally Posted by hurryinhoosier62
The lifelong mechanic and engine builder who taught me most of what I know about engines would tell you to change the damn oil! Of course, his engines only won two USAC National Sprint Car Championships; the other lifelong mechanic and engine builder who taught me much about building modern competition engines would tell you to change the damn oil. He only won an NHRA World Championship. What would they know?
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Thats great you had those experiences, but again way too many variables to say that happens to everyone elses engines. You said in those situations the engines
werent warmed up long enough to get rid of moisture... that doesnt apply to my examples & experiences or most others that know how to store an engine properly.
So just to clarify this, when I talk about oil changes at 1 year or longer I mean for engines that are stored properly or get driven regularly/occasionally to fully warm up the engine/oil and on a healthy engine... other situations with other types of engines like air craft or high mile dirty engines or short starts some do in the winter to "lubricate the seals" that introduces lots of moisture dont apply here.