This web page says..... "in the 1969s"
http://www.ehow.com/list_7185973_types-oil-cans.html

Christopher A. Young
Learn more about Jesus
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"Erik" wrote in message
...
Hi all,

Was talking to a neighbor this morning, and somehow came on the subject
of 1 quart plastic oil bottles... and we were trying to remember about
what year the change to them was made.

Does anyone here remember about when that was?

I'm thinking mid 80's or so...

Thanks in advance!

Erik

PS, BTW, I still have one of those old cans.. full and un-opened!