Quote:
Originally Posted by 78w72
Yes im aware of combustion byproducts and acids etc... there are additives in all oils that neutralize them, with lower miles as mentioned, the additives do what they are supposed to do... theres no difference from sitting for a short time with lower miles than driving the car to reach the maximum miles before an oil change, if anything taxed oil at the end of its life has more acids in it and is exposed to more moisture from starting & driving. Clean low mile oil is perfectly safe to sit for a few months during storage or a full year. Valvoline confirmed this when I asked.
The valvoline article/FAQ was quoted in regards to new oil in the bottle, as I mentioned I have/use older but new oils all the time without issue, and there are lots of people out there with stashes of older oils older than 5-8-10 years.
Some people seem to think new oil goes bad sitting in the bottle for a few years so I quoted the info. Some also think clean oil with lower miles in the engine for ~1 year goes bad and needs to have a special additive package... but then again some think they need VR1 racing oil in their stock cam engine, none of that is true or based on any scientific proof. Valvoline as well as many mechanics I know have said low mile clean oil is perfectly fine to use after 1 year, and based on my experience of doing that for 25+ years theres is nothing to indicate otherwise.
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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.