Quote:
Originally Posted by N3FOLN3FOL
I've never heard of this. One thing I know it is true for brake fluid. I've used an opened oil (quart) container that has been opened for about 4 or 5 months. My assumption is that as long as the oil has not been poured inside the engine, it stays good and ready for use. Actually, I have never seen an expiration date on a quart of oil container.
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I understand it staying in the container and being good. But when it gets exposed to air, such as in the engine case, how long does it take it to start breaking down?
Honda's set-up manual states that even if a bike is new, that the oil should be changed if it has set in the case 2 years.