Originally Posted By: snakyjake
I'm curious why everyone is suggesting oil can go longer than one year? From my understanding the oil additives aren't as effective after one year. Even the oil container tells me the oil shouldn't go longer than a year.
Two driving forces tell you to change oil frequently:
1) marketing makes for sales volume and profit
2) legal issues make for reduced warranty claim concerns
There is no appreciable degradation of additives after a year. There is a Blackstone link where Ryan tested OLD oils and found the additives still reasonably intact. Go to their site and check it out. I would agree that super long term storage may have some persuasion on the fluid and additive, but I'm not at all worried about it out to 5 years. Probably could do more, but I've never had fluid sit around past that so I don't concern myself with what does not happen.
The fact is that oil and filters have no idea of time as long as it's a REASONABLE duration. But the industry definition and mine are VERY different.
Jim Allen once mentioned that when he toured the Fram engineering facility and spoke with techs, three years for filters was ceratinly doable. Four years was "iffy" and five started the tooth-sucking "meh ... maybe, maybe not". That is their unofficial position on cellulose/syn blend filters. One could expect that full syn media could go longer.
We've seen a few UOAs where folks (including me) run OFCIs WAY past one year, and there is NOTHING to indicate anything is wrong. As I said previously, I've done 3 years on lube/filter on many pieces of my equipment and nothing has gone wrong and the UOA data and physical inspections of filters show nothing out of the ordinary. DATA and FACTS show reasonable extensions are not a concern.
There is nothing wrong whatsoever with changing lube based on a calendar, as long as you don't mind huge monetary waste. It will certainly protect your investment, but not to any appreciable degree past a three-year alternative. It will, however, well protect the sales and liability of the providers!