Quote:
Originally Posted by ~el~jefe~
I saw Tcoat's post about the oil not breaking down just sitting there. From what I have been reading, the Oil part of the oil has almost no lifespan, it just keeps doing its thing forever just about. What does break down are the crisco-like crap they put in to keep the oil flowing nice. I read that they are sensitive to TIME and not use. They make it sludge and therefore difficult to lubricate on start up, the most important time. I always wondered why oil has a time expiration date and not simply a usage one. It could look nice and yellow and clean, and be unable to flow through and lubricate if the oil is old, just simply old.
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That is in very extreme and long term (years) of sitting. Your oil does not break down in months. There are no expiration dates on jugs of oil. The recommended change intervals based on time are a throw back to the days of the old "natural" oils and are pretty much meaningless with today's synthetics.